Merge pull request #108 from cyberman54/development

v1.3.91

lib/U8g2_ID942-tweaked/.library.json

@@ -0,0 +1,49 @@
+{
+    "description": "Monochrome LCD, OLED and eInk Library. Display controller: SSD1305, SSD1306, SSD1309, SSD1322, SSD1325, SSD1327, SSD1329, SSD1606, SSD1607, SH1106, SH1107, SH1122, T6963, RA8835, LC7981, PCD8544, PCF8812, HX1230, UC1601, UC1604, UC1608, UC1610, UC1611, UC1701, ST7565, ST7567, ST7588, ST75256, NT7534, IST3020, ST7920, LD7032, KS0108, SED1520, SBN1661, IL3820, MAX7219. Interfaces: I2C, SPI, Parallel.", 
+    "repository": {
+        "url": "https://github.com/olikraus/U8g2_Arduino", 
+        "type": "git"
+    }, 
+    "platforms": [
+        "atmelavr", 
+        "atmelsam", 
+        "espressif32", 
+        "espressif8266", 
+        "intel_arc32", 
+        "microchippic32", 
+        "nordicnrf51", 
+        "nordicnrf52", 
+        "ststm32", 
+        "teensy", 
+        "timsp430"
+    ], 
+    "export": {
+        "exclude": [
+            "extras", 
+            "docs", 
+            "tests", 
+            "test", 
+            "*.doxyfile", 
+            "*.pdf"
+        ], 
+        "include": null
+    }, 
+    "authors": [
+        {
+            "maintainer": true, 
+            "name": "oliver", 
+            "url": null, 
+            "email": "olikraus@gmail.com"
+        }
+    ], 
+    "keywords": [
+        "display"
+    ], 
+    "id": 942, 
+    "name": "U8g2", 
+    "frameworks": [
+        "arduino"
+    ], 
+    "version": "2.23.12", 
+    "homepage": "https://github.com/olikraus/u8g2"
+}

lib/U8g2_ID942-tweaked/LICENSE

@@ -0,0 +1,84 @@
+
+The U8g2lib code (http://code.google.com/p/u8g2/ and
+https://github.com/olikraus/U8g2_Arduino) is licensed under the terms of 
+the new-bsd license (two-clause bsd license).
+See also: http://www.opensource.org/licenses/bsd-license.php
+
+The repository and optionally the releases contain icons, which are
+derived from the WPZOOM Developer Icon Set:
+http://www.wpzoom.com/wpzoom/new-freebie-wpzoom-developer-icon-set-154-free-icons/
+WPZOOM Developer Icon Set by WPZOOM is licensed under a Creative Commons 
+Attribution-ShareAlike 3.0 Unported License.
+
+Fonts are licensed under different conditions.
+See 
+	https://github.com/olikraus/u8g2/wiki/fntgrp
+for detailed information on the licensing conditions for each font.
+
+============ X11 Fonts COUR, HELV, NCEN, TIM, SYMB ============
+
+For fonts derived from the following files, the license below applies.
+COURB08.BDF COURB10.BDF COURB12.BDF COURB14.BDF COURB18.BDF 
+COURB24.BDF COURR08.BDF COURR10.BDF COURR12.BDF COURR14.BDF 
+COURR18.BDF COURR24.BDF HELVB08.BDF HELVB10.BDF HELVB12.BDF HELVB14.BDF 
+HELVB18.BDF HELVB24.BDF HELVR08.BDF HELVR10.BDF HELVR12.BDF HELVR14.BDF 
+HELVR18.BDF HELVR24.BDF NCENB08.BDF NCENB10.BDF NCENB12.BDF 
+NCENB14.BDF NCENB18.BDF NCENB24.BDF NCENR08.BDF NCENR10.BDF 
+NCENR12.BDF NCENR14.BDF NCENR18.BDF NCENR24.BDF SYMB08.BDF SYMB10.BDF 
+SYMB12.BDF SYMB14.BDF SYMB18.BDF SYMB24.BDF TIMB08.BDF TIMB10.BDF 
+TIMB12.BDF TIMB14.BDF TIMB18.BDF TIMB24.BDF TIMR08.BDF TIMR10.BDF 
+TIMR12.BDF TIMR14.BDF TIMR18.BDF TIMR24.BDF 
+
+Copyright 1984-1989, 1994 Adobe Systems Incorporated.
+Copyright 1988, 1994 Digital Equipment Corporation.
+
+Adobe is a trademark of Adobe Systems Incorporated which may be
+registered in certain jurisdictions.
+Permission to use these trademarks is hereby granted only in
+association with the images described in this file.
+
+Permission to use, copy, modify, distribute and sell this software
+and its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notices appear in all
+copies and that both those copyright notices and this permission
+notice appear in supporting documentation, and that the names of
+Adobe Systems and Digital Equipment Corporation not be used in
+advertising or publicity pertaining to distribution of the software
+without specific, written prior permission.  Adobe Systems and
+Digital Equipment Corporation make no representations about the
+suitability of this software for any purpose.  It is provided "as
+is" without express or implied warranty.
+
+
+============ BSD License for U8g2lib Code ============
+
+Universal 8bit Graphics Library (http://code.google.com/p/u8g2/ and
+https://github.com/olikraus/U8g2_Arduino)
+
+Copyright (c) 2016, olikraus@gmail.com
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, 
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this list 
+  of conditions and the following disclaimer.
+  
+* Redistributions in binary form must reproduce the above copyright notice, this 
+  list of conditions and the following disclaimer in the documentation and/or other 
+  materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+

lib/U8g2_ID942-tweaked/README.md

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+# U8g2_Arduino: Arduino Monochrome Graphics Library
+
+![https://raw.githubusercontent.com/wiki/olikraus/u8g2/img/uc1701_dogs102_uno_board_320.jpg](https://raw.githubusercontent.com/wiki/olikraus/u8g2/img/uc1701_dogs102_uno_board_320.jpg) 
+
+U8glib V2 library for Arduino
+
+Description: https://github.com/olikraus/u8g2/wiki
+
+Issue Tracker: https://github.com/olikraus/u8g2/issues
+
+Download (2.23.12): https://github.com/olikraus/U8g2_Arduino/archive/master.zip
+

lib/U8g2_ID942-tweaked/library.properties

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+name=U8g2
+version=2.23.12
+author=oliver <olikraus@gmail.com>
+maintainer=oliver <olikraus@gmail.com>
+sentence=Monochrome LCD, OLED and eInk Library. Display controller: SSD1305, SSD1306, SSD1309, SSD1322, SSD1325, SSD1327, SSD1329, SSD1606, SSD1607, SH1106, SH1107, SH1122, T6963, RA8835, LC7981, PCD8544, PCF8812, HX1230, UC1601, UC1604, UC1608, UC1610, UC1611, UC1701, ST7565, ST7567, ST7588, ST75256, NT7534, IST3020, ST7920, LD7032, KS0108, SED1520, SBN1661, IL3820, MAX7219. Interfaces: I2C, SPI, Parallel.
+paragraph=Monochrome LCD, OLED and eInk Library. Successor of U8glib. Supported display controller: SSD1305, SSD1306, SSD1309, SSD1322, SSD1325, SSD1327, SSD1329, SSD1606, SSD1607, SH1106, SH1107, SH1122, T6963, RA8835, LC7981, PCD8544, PCF8812, HX1230, UC1601, UC1604, UC1608, UC1610, UC1611, UC1701, ST7565, ST7567, ST7588, ST75256, NT7534, IST3020, ST7920, LD7032, KS0108, SED1520, SBN1661, IL3820, MAX7219. Supported interfaces: I2C, SPI, Parallel. Features: UTF8, >700 fonts, U8x8 char output.
+category=Display
+url=https://github.com/olikraus/u8g2
+architectures=*
+license=BSD-2-Clause

lib/U8g2_ID942-tweaked/src/clib/u8g2_bitmap.c

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+/*
+
+  u8g2_bitmap.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+
+
+void u8g2_SetBitmapMode(u8g2_t *u8g2, uint8_t is_transparent) {
+  u8g2->bitmap_transparency = is_transparent;
+}
+
+/*
+  x,y 	Position on the display
+  len		Length of bitmap line in pixel. Note: This differs from u8glib which had a bytecount here.
+  b		Pointer to the bitmap line.
+  Only draw pixels which are set.
+*/
+
+void u8g2_DrawHorizontalBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
+{
+  uint8_t mask;
+  uint8_t color = u8g2->draw_color;
+  uint8_t ncolor = (color == 0 ? 1 : 0);
+
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  mask = 128;
+  while(len > 0)
+  {
+    if ( *b & mask ) {
+      u8g2->draw_color = color;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    } else if ( u8g2->bitmap_transparency == 0 ) {
+      u8g2->draw_color = ncolor;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    }
+
+    x++;
+    mask >>= 1;
+    if ( mask == 0 )
+    {
+      mask = 128;
+      b++;
+    }
+    len--;
+  }
+  u8g2->draw_color = color;
+}
+
+
+/* u8glib compatible bitmap draw function */
+void u8g2_DrawBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t cnt, u8g2_uint_t h, const uint8_t *bitmap)
+{
+  u8g2_uint_t w;
+  w = cnt;
+  w *= 8;
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  while( h > 0 )
+  {
+    u8g2_DrawHorizontalBitmap(u8g2, x, y, w, bitmap);
+    bitmap += cnt;
+    y++;
+    h--;
+  }
+}
+
+
+
+void u8g2_DrawHXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
+{
+  uint8_t mask;
+  uint8_t color = u8g2->draw_color;
+  uint8_t ncolor = (color == 0 ? 1 : 0);
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  mask = 1;
+  while(len > 0) {
+    if ( *b & mask ) {
+      u8g2->draw_color = color;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    } else if ( u8g2->bitmap_transparency == 0 ) {
+      u8g2->draw_color = ncolor;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    }
+    x++;
+    mask <<= 1;
+    if ( mask == 0 )
+    {
+      mask = 1;
+      b++;
+    }
+    len--;
+  }
+  u8g2->draw_color = color;
+}
+
+
+void u8g2_DrawXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
+{
+  u8g2_uint_t blen;
+  blen = w;
+  blen += 7;
+  blen >>= 3;
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  while( h > 0 )
+  {
+    u8g2_DrawHXBM(u8g2, x, y, w, bitmap);
+    bitmap += blen;
+    y++;
+    h--;
+  }
+}
+
+
+
+
+
+
+void u8g2_DrawHXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
+{
+  uint8_t mask;
+  uint8_t color = u8g2->draw_color;
+  uint8_t ncolor = (color == 0 ? 1 : 0);
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  mask = 1;
+  while(len > 0)
+  {
+    if( u8x8_pgm_read(b) & mask ) {
+      u8g2->draw_color = color;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    } else if( u8g2->bitmap_transparency == 0 ) {
+      u8g2->draw_color = ncolor;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    }
+   
+    x++;
+    mask <<= 1;
+    if ( mask == 0 )
+    {
+      mask = 1;
+      b++;
+    }
+    len--;
+  }
+  u8g2->draw_color = color;
+}
+
+
+void u8g2_DrawXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
+{
+  u8g2_uint_t blen;
+  blen = w;
+  blen += 7;
+  blen >>= 3;
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  while( h > 0 )
+  {
+    u8g2_DrawHXBMP(u8g2, x, y, w, bitmap);
+    bitmap += blen;
+    y++;
+    h--;
+  }
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_box.c

@@ -0,0 +1,207 @@
+/*
+
+  u8g2_box.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+
+/*
+  draw a filled box
+  restriction: does not work for w = 0 or h = 0
+*/
+void u8g2_DrawBox(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h)
+{
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  while( h != 0 )
+  { 
+    u8g2_DrawHVLine(u8g2, x, y, w, 0);
+    y++;    
+    h--;
+  }
+}
+
+
+/*
+  draw a frame (empty box)
+  restriction: does not work for w = 0 or h = 0
+  ToDo:
+    pixel in the corners are drawn twice. This could be optimized.
+*/
+void u8g2_DrawFrame(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h)
+{
+  u8g2_uint_t xtmp = x;
+  
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  u8g2_DrawHVLine(u8g2, x, y, w, 0);
+  u8g2_DrawHVLine(u8g2, x, y, h, 1);
+  x+=w;
+  x--;
+  u8g2_DrawHVLine(u8g2, x, y, h, 1);
+  y+=h;
+  y--;
+  u8g2_DrawHVLine(u8g2, xtmp, y, w, 0);
+}
+
+
+
+
+void u8g2_DrawRBox(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, u8g2_uint_t r)
+{
+  u8g2_uint_t xl, yu;
+  u8g2_uint_t yl, xr;
+
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+
+  xl = x;
+  xl += r;
+  yu = y;
+  yu += r;
+ 
+  xr = x;
+  xr += w;
+  xr -= r;
+  xr -= 1;
+  
+  yl = y;
+  yl += h;
+  yl -= r; 
+  yl -= 1;
+
+  u8g2_DrawDisc(u8g2, xl, yu, r, U8G2_DRAW_UPPER_LEFT);
+  u8g2_DrawDisc(u8g2, xr, yu, r, U8G2_DRAW_UPPER_RIGHT);
+  u8g2_DrawDisc(u8g2, xl, yl, r, U8G2_DRAW_LOWER_LEFT);
+  u8g2_DrawDisc(u8g2, xr, yl, r, U8G2_DRAW_LOWER_RIGHT);
+
+  {
+    u8g2_uint_t ww, hh;
+
+    ww = w;
+    ww -= r;
+    ww -= r;
+    xl++;
+    yu++;
+    
+    if ( ww >= 3 )
+    {
+      ww -= 2;
+      u8g2_DrawBox(u8g2, xl, y, ww, r+1);
+      u8g2_DrawBox(u8g2, xl, yl, ww, r+1);
+    }
+    
+    hh = h;
+    hh -= r;
+    hh -= r;
+    //h--;
+    if ( hh >= 3 )
+    {
+      hh -= 2;
+      u8g2_DrawBox(u8g2, x, yu, w, hh);
+    }
+  }
+}
+
+
+void u8g2_DrawRFrame(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, u8g2_uint_t r)
+{
+  u8g2_uint_t xl, yu;
+
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+
+  xl = x;
+  xl += r;
+  yu = y;
+  yu += r;
+ 
+  {
+    u8g2_uint_t yl, xr;
+      
+    xr = x;
+    xr += w;
+    xr -= r;
+    xr -= 1;
+    
+    yl = y;
+    yl += h;
+    yl -= r; 
+    yl -= 1;
+
+    u8g2_DrawCircle(u8g2, xl, yu, r, U8G2_DRAW_UPPER_LEFT);
+    u8g2_DrawCircle(u8g2, xr, yu, r, U8G2_DRAW_UPPER_RIGHT);
+    u8g2_DrawCircle(u8g2, xl, yl, r, U8G2_DRAW_LOWER_LEFT);
+    u8g2_DrawCircle(u8g2, xr, yl, r, U8G2_DRAW_LOWER_RIGHT);
+  }
+
+  {
+    u8g2_uint_t ww, hh;
+
+    ww = w;
+    ww -= r;
+    ww -= r;
+    hh = h;
+    hh -= r;
+    hh -= r;
+    
+    xl++;
+    yu++;
+    
+    if ( ww >= 3 )
+    {
+      ww -= 2;
+      h--;
+      u8g2_DrawHLine(u8g2, xl, y, ww);
+      u8g2_DrawHLine(u8g2, xl, y+h, ww);
+    }
+    
+    if ( hh >= 3 )
+    {
+      hh -= 2;
+      w--;
+      u8g2_DrawVLine(u8g2, x, yu, hh);
+      u8g2_DrawVLine(u8g2, x+w, yu, hh);
+    }
+  }
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_buffer.c

@@ -0,0 +1,132 @@
+/* 
+
+  u8g2_buffer.c 
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+#include <string.h>
+
+/*============================================*/
+void u8g2_ClearBuffer(u8g2_t *u8g2)
+{
+  size_t cnt;
+  cnt = u8g2_GetU8x8(u8g2)->display_info->tile_width;
+  cnt *= u8g2->tile_buf_height;
+  cnt *= 8;
+  memset(u8g2->tile_buf_ptr, 0, cnt);
+}
+
+/*============================================*/
+
+static void u8g2_send_tile_row(u8g2_t *u8g2, uint8_t src_tile_row, uint8_t dest_tile_row)
+{
+  uint8_t *ptr;
+  uint16_t offset;
+  uint8_t w;
+  
+  w = u8g2_GetU8x8(u8g2)->display_info->tile_width;
+  offset = src_tile_row;
+  ptr = u8g2->tile_buf_ptr;
+  offset *= w;
+  offset *= 8;
+  ptr += offset;
+  u8x8_DrawTile(u8g2_GetU8x8(u8g2), 0, dest_tile_row, w, ptr);
+}
+
+/* 
+  write the buffer to the display RAM. 
+  For most displays, this will make the content visible to the user.
+  Some displays (like the SSD1606) require a u8x8_RefreshDisplay()
+*/
+static void u8g2_send_buffer(u8g2_t *u8g2) U8X8_NOINLINE;
+static void u8g2_send_buffer(u8g2_t *u8g2)
+{
+  uint8_t src_row;
+  uint8_t src_max;
+  uint8_t dest_row;
+  uint8_t dest_max;
+
+  src_row = 0;
+  src_max = u8g2->tile_buf_height;
+  dest_row = u8g2->tile_curr_row;
+  dest_max = u8g2_GetU8x8(u8g2)->display_info->tile_height;
+  
+  do
+  {
+    u8g2_send_tile_row(u8g2, src_row, dest_row);
+    src_row++;
+    dest_row++;
+  } while( src_row < src_max && dest_row < dest_max );
+}
+
+/* same as u8g2_send_buffer but also send the DISPLAY_REFRESH message (used by SSD1606) */
+void u8g2_SendBuffer(u8g2_t *u8g2)
+{
+  u8g2_send_buffer(u8g2);
+  u8x8_RefreshDisplay( u8g2_GetU8x8(u8g2) );  
+}
+
+/*============================================*/
+void u8g2_SetBufferCurrTileRow(u8g2_t *u8g2, uint8_t row)
+{
+  u8g2->tile_curr_row = row;
+  u8g2->cb->update(u8g2);
+}
+
+void u8g2_FirstPage(u8g2_t *u8g2)
+{
+  if ( u8g2->is_auto_page_clear )
+  {
+    u8g2_ClearBuffer(u8g2);
+  }
+  u8g2_SetBufferCurrTileRow(u8g2, 0);
+}
+
+uint8_t u8g2_NextPage(u8g2_t *u8g2)
+{
+  uint8_t row;
+  u8g2_send_buffer(u8g2);
+  row = u8g2->tile_curr_row;
+  row += u8g2->tile_buf_height;
+  if ( row >= u8g2_GetU8x8(u8g2)->display_info->tile_height )
+  {
+    u8x8_RefreshDisplay( u8g2_GetU8x8(u8g2) );
+    return 0;
+  }
+  if ( u8g2->is_auto_page_clear )
+  {
+    u8g2_ClearBuffer(u8g2);
+  }
+  u8g2_SetBufferCurrTileRow(u8g2, row);
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8g2_circle.c

@@ -0,0 +1,479 @@
+/*
+
+  u8g2_box.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+
+/*==============================================*/
+/* Circle */
+
+static void u8g2_draw_circle_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option) U8G2_NOINLINE;
+
+static void u8g2_draw_circle_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option)
+{
+    /* upper right */
+    if ( option & U8G2_DRAW_UPPER_RIGHT )
+    {
+      u8g2_DrawPixel(u8g2, x0 + x, y0 - y);
+      u8g2_DrawPixel(u8g2, x0 + y, y0 - x);
+    }
+    
+    /* upper left */
+    if ( option & U8G2_DRAW_UPPER_LEFT )
+    {
+      u8g2_DrawPixel(u8g2, x0 - x, y0 - y);
+      u8g2_DrawPixel(u8g2, x0 - y, y0 - x);
+    }
+    
+    /* lower right */
+    if ( option & U8G2_DRAW_LOWER_RIGHT )
+    {
+      u8g2_DrawPixel(u8g2, x0 + x, y0 + y);
+      u8g2_DrawPixel(u8g2, x0 + y, y0 + x);
+    }
+    
+    /* lower left */
+    if ( option & U8G2_DRAW_LOWER_LEFT )
+    {
+      u8g2_DrawPixel(u8g2, x0 - x, y0 + y);
+      u8g2_DrawPixel(u8g2, x0 - y, y0 + x);
+    }
+}
+
+static void u8g2_draw_circle(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rad, uint8_t option)
+{
+    u8g2_int_t f;
+    u8g2_int_t ddF_x;
+    u8g2_int_t ddF_y;
+    u8g2_uint_t x;
+    u8g2_uint_t y;
+
+    f = 1;
+    f -= rad;
+    ddF_x = 1;
+    ddF_y = 0;
+    ddF_y -= rad;
+    ddF_y *= 2;
+    x = 0;
+    y = rad;
+
+    u8g2_draw_circle_section(u8g2, x, y, x0, y0, option);
+    
+    while ( x < y )
+    {
+      if (f >= 0) 
+      {
+        y--;
+        ddF_y += 2;
+        f += ddF_y;
+      }
+      x++;
+      ddF_x += 2;
+      f += ddF_x;
+
+      u8g2_draw_circle_section(u8g2, x, y, x0, y0, option);    
+    }
+}
+
+void u8g2_DrawCircle(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rad, uint8_t option)
+{
+  /* check for bounding box */
+#ifdef U8G2_WITH_INTERSECTION
+  {
+    if ( u8g2_IsIntersection(u8g2, x0-rad, y0-rad, x0+rad+1, y0+rad+1) == 0 ) 
+      return;
+  }
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  
+  /* draw circle */
+  u8g2_draw_circle(u8g2, x0, y0, rad, option);
+}
+
+/*==============================================*/
+/* Disk */
+
+static void u8g2_draw_disc_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option) U8G2_NOINLINE;
+
+static void u8g2_draw_disc_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option)
+{
+    /* upper right */
+    if ( option & U8G2_DRAW_UPPER_RIGHT )
+    {
+      u8g2_DrawVLine(u8g2, x0+x, y0-y, y+1);
+      u8g2_DrawVLine(u8g2, x0+y, y0-x, x+1);
+    }
+    
+    /* upper left */
+    if ( option & U8G2_DRAW_UPPER_LEFT )
+    {
+      u8g2_DrawVLine(u8g2, x0-x, y0-y, y+1);
+      u8g2_DrawVLine(u8g2, x0-y, y0-x, x+1);
+    }
+    
+    /* lower right */
+    if ( option & U8G2_DRAW_LOWER_RIGHT )
+    {
+      u8g2_DrawVLine(u8g2, x0+x, y0, y+1);
+      u8g2_DrawVLine(u8g2, x0+y, y0, x+1);
+    }
+    
+    /* lower left */
+    if ( option & U8G2_DRAW_LOWER_LEFT )
+    {
+      u8g2_DrawVLine(u8g2, x0-x, y0, y+1);
+      u8g2_DrawVLine(u8g2, x0-y, y0, x+1);
+    }
+}
+
+static void u8g2_draw_disc(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rad, uint8_t option)
+{
+  u8g2_int_t f;
+  u8g2_int_t ddF_x;
+  u8g2_int_t ddF_y;
+  u8g2_uint_t x;
+  u8g2_uint_t y;
+
+  f = 1;
+  f -= rad;
+  ddF_x = 1;
+  ddF_y = 0;
+  ddF_y -= rad;
+  ddF_y *= 2;
+  x = 0;
+  y = rad;
+
+  u8g2_draw_disc_section(u8g2, x, y, x0, y0, option);
+  
+  while ( x < y )
+  {
+    if (f >= 0) 
+    {
+      y--;
+      ddF_y += 2;
+      f += ddF_y;
+    }
+    x++;
+    ddF_x += 2;
+    f += ddF_x;
+
+    u8g2_draw_disc_section(u8g2, x, y, x0, y0, option);    
+  }
+}
+
+void u8g2_DrawDisc(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rad, uint8_t option)
+{
+  /* check for bounding box */
+#ifdef U8G2_WITH_INTERSECTION
+  {
+    if ( u8g2_IsIntersection(u8g2, x0-rad, y0-rad, x0+rad+1, y0+rad+1) == 0 ) 
+      return;
+  }
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  /* draw disc */
+  u8g2_draw_disc(u8g2, x0, y0, rad, option);
+}
+
+/*==============================================*/
+/* Ellipse */
+
+/*
+  Source: 
+    Foley, Computer Graphics, p 90
+*/
+static void u8g2_draw_ellipse_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option) U8G2_NOINLINE;
+static void u8g2_draw_ellipse_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option)
+{
+    /* upper right */
+    if ( option & U8G2_DRAW_UPPER_RIGHT )
+    {
+      u8g2_DrawPixel(u8g2, x0 + x, y0 - y);
+    }
+    
+    /* upper left */
+    if ( option & U8G2_DRAW_UPPER_LEFT )
+    {
+      u8g2_DrawPixel(u8g2, x0 - x, y0 - y);
+    }
+    
+    /* lower right */
+    if ( option & U8G2_DRAW_LOWER_RIGHT )
+    {
+      u8g2_DrawPixel(u8g2, x0 + x, y0 + y);
+    }
+    
+    /* lower left */
+    if ( option & U8G2_DRAW_LOWER_LEFT )
+    {
+      u8g2_DrawPixel(u8g2, x0 - x, y0 + y);
+    }
+}
+
+static void u8g2_draw_ellipse(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rx, u8g2_uint_t ry, uint8_t option)
+{
+  u8g2_uint_t x, y;
+  u8g2_long_t xchg, ychg;
+  u8g2_long_t err;
+  u8g2_long_t rxrx2;
+  u8g2_long_t ryry2;
+  u8g2_long_t stopx, stopy;
+  
+  rxrx2 = rx;
+  rxrx2 *= rx;
+  rxrx2 *= 2;
+  
+  ryry2 = ry;
+  ryry2 *= ry;
+  ryry2 *= 2;
+  
+  x = rx;
+  y = 0;
+  
+  xchg = 1;
+  xchg -= rx;
+  xchg -= rx;
+  xchg *= ry;
+  xchg *= ry;
+  
+  ychg = rx;
+  ychg *= rx;
+  
+  err = 0;
+  
+  stopx = ryry2;
+  stopx *= rx;
+  stopy = 0;
+  
+  while( stopx >= stopy )
+  {
+    u8g2_draw_ellipse_section(u8g2, x, y, x0, y0, option);
+    y++;
+    stopy += rxrx2;
+    err += ychg;
+    ychg += rxrx2;
+    if ( 2*err+xchg > 0 )
+    {
+      x--;
+      stopx -= ryry2;
+      err += xchg;
+      xchg += ryry2;      
+    }
+  }
+
+  x = 0;
+  y = ry;
+  
+  xchg = ry;
+  xchg *= ry;
+  
+  ychg = 1;
+  ychg -= ry;
+  ychg -= ry;
+  ychg *= rx;
+  ychg *= rx;
+  
+  err = 0;
+  
+  stopx = 0;
+
+  stopy = rxrx2;
+  stopy *= ry;
+  
+
+  while( stopx <= stopy )
+  {
+    u8g2_draw_ellipse_section(u8g2, x, y, x0, y0, option);
+    x++;
+    stopx += ryry2;
+    err += xchg;
+    xchg += ryry2;
+    if ( 2*err+ychg > 0 )
+    {
+      y--;
+      stopy -= rxrx2;
+      err += ychg;
+      ychg += rxrx2;
+    }
+  }
+  
+}
+
+void u8g2_DrawEllipse(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rx, u8g2_uint_t ry, uint8_t option)
+{
+  /* check for bounding box */
+#ifdef U8G2_WITH_INTERSECTION
+  {
+    if ( u8g2_IsIntersection(u8g2, x0-rx, y0-ry, x0+rx+1, y0+ry+1) == 0 ) 
+      return;
+  }
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  u8g2_draw_ellipse(u8g2, x0, y0, rx, ry, option);
+}
+
+/*==============================================*/
+/* Filled Ellipse */
+
+static void u8g2_draw_filled_ellipse_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option) U8G2_NOINLINE;
+static void u8g2_draw_filled_ellipse_section(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t x0, u8g2_uint_t y0, uint8_t option)
+{
+    /* upper right */
+    if ( option & U8G2_DRAW_UPPER_RIGHT )
+    {
+      u8g2_DrawVLine(u8g2, x0+x, y0-y, y+1);
+    }
+    
+    /* upper left */
+    if ( option & U8G2_DRAW_UPPER_LEFT )
+    {
+      u8g2_DrawVLine(u8g2, x0-x, y0-y, y+1);
+    }
+    
+    /* lower right */
+    if ( option & U8G2_DRAW_LOWER_RIGHT )
+    {
+      u8g2_DrawVLine(u8g2, x0+x, y0, y+1);
+    }
+    
+    /* lower left */
+    if ( option & U8G2_DRAW_LOWER_LEFT )
+    {
+      u8g2_DrawVLine(u8g2, x0-x, y0, y+1);
+    }
+}
+
+static void u8g2_draw_filled_ellipse(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rx, u8g2_uint_t ry, uint8_t option)
+{
+  u8g2_uint_t x, y;
+  u8g2_long_t xchg, ychg;
+  u8g2_long_t err;
+  u8g2_long_t rxrx2;
+  u8g2_long_t ryry2;
+  u8g2_long_t stopx, stopy;
+  
+  rxrx2 = rx;
+  rxrx2 *= rx;
+  rxrx2 *= 2;
+  
+  ryry2 = ry;
+  ryry2 *= ry;
+  ryry2 *= 2;
+  
+  x = rx;
+  y = 0;
+  
+  xchg = 1;
+  xchg -= rx;
+  xchg -= rx;
+  xchg *= ry;
+  xchg *= ry;
+  
+  ychg = rx;
+  ychg *= rx;
+  
+  err = 0;
+  
+  stopx = ryry2;
+  stopx *= rx;
+  stopy = 0;
+  
+  while( stopx >= stopy )
+  {
+    u8g2_draw_filled_ellipse_section(u8g2, x, y, x0, y0, option);
+    y++;
+    stopy += rxrx2;
+    err += ychg;
+    ychg += rxrx2;
+    if ( 2*err+xchg > 0 )
+    {
+      x--;
+      stopx -= ryry2;
+      err += xchg;
+      xchg += ryry2;      
+    }
+  }
+
+  x = 0;
+  y = ry;
+  
+  xchg = ry;
+  xchg *= ry;
+  
+  ychg = 1;
+  ychg -= ry;
+  ychg -= ry;
+  ychg *= rx;
+  ychg *= rx;
+  
+  err = 0;
+  
+  stopx = 0;
+
+  stopy = rxrx2;
+  stopy *= ry;
+  
+
+  while( stopx <= stopy )
+  {
+    u8g2_draw_filled_ellipse_section(u8g2, x, y, x0, y0, option);
+    x++;
+    stopx += ryry2;
+    err += xchg;
+    xchg += ryry2;
+    if ( 2*err+ychg > 0 )
+    {
+      y--;
+      stopy -= rxrx2;
+      err += ychg;
+      ychg += rxrx2;
+    }
+  }
+  
+}
+
+void u8g2_DrawFilledEllipse(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t rx, u8g2_uint_t ry, uint8_t option)
+{
+  /* check for bounding box */
+#ifdef U8G2_WITH_INTERSECTION
+  {
+    if ( u8g2_IsIntersection(u8g2, x0-rx, y0-ry, x0+rx+1, y0+ry+1) == 0 ) 
+      return;
+  }
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  u8g2_draw_filled_ellipse(u8g2, x0, y0, rx, ry, option);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_cleardisplay.c

@@ -0,0 +1,54 @@
+/*
+
+  u8g2_cleardisplay.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+#include "u8g2.h"
+
+/* Clear screen buffer & display reliable for all u8g2 displays. */
+/* This is done with u8g2 picture loop, because we can not use the u8x8 function in all cases */
+void u8g2_ClearDisplay(u8g2_t *u8g2)
+{
+  u8g2_FirstPage(u8g2);
+  do {
+  } while ( u8g2_NextPage(u8g2) );
+  /* 
+    This function is usually called during startup (u8g2.begin()).
+    However the user might want to use full buffer mode with clear and 
+    send commands.
+    This will not work because the current tile row is modified by the picture 
+    loop above. To fix this, reset the tile row to 0, issue #370
+    A workaround would be, that the user sets the current tile row to 0 manually.
+  */
+  u8g2_SetBufferCurrTileRow(u8g2, 0);  
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_d_memory.c

@@ -0,0 +1,690 @@
+/* u8g2_d_memory.c */
+/* generated code, codebuild, u8g2 project */
+
+#include "u8g2.h"
+
+uint8_t *u8g2_m_16_4_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[128];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_16_4_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_16_4_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[512];
+  *page_cnt = 4;
+  return buf;
+}
+uint8_t *u8g2_m_16_8_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[128];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_16_8_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_16_8_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1024];
+  *page_cnt = 8;
+  return buf;
+}
+uint8_t *u8g2_m_9_5_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[72];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_9_5_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[144];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_9_5_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[360];
+  *page_cnt = 5;
+  return buf;
+}
+uint8_t *u8g2_m_8_4_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[64];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_8_4_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[128];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_8_4_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 4;
+  return buf;
+}
+uint8_t *u8g2_m_8_16_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[64];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_8_16_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[128];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_8_16_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1024];
+  *page_cnt = 16;
+  return buf;
+}
+uint8_t *u8g2_m_12_12_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[96];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_12_12_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[192];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_12_12_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1152];
+  *page_cnt = 12;
+  return buf;
+}
+uint8_t *u8g2_m_16_16_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[128];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_16_16_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_16_16_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[2048];
+  *page_cnt = 16;
+  return buf;
+}
+uint8_t *u8g2_m_20_20_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[160];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_20_20_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[320];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_20_20_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[3200];
+  *page_cnt = 20;
+  return buf;
+}
+uint8_t *u8g2_m_32_8_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_32_8_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[512];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_32_8_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[2048];
+  *page_cnt = 8;
+  return buf;
+}
+uint8_t *u8g2_m_8_6_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[64];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_8_6_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[128];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_8_6_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[384];
+  *page_cnt = 6;
+  return buf;
+}
+uint8_t *u8g2_m_6_8_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[48];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_6_8_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[96];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_6_8_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[384];
+  *page_cnt = 8;
+  return buf;
+}
+uint8_t *u8g2_m_12_2_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[96];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_12_2_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[192];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_12_2_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[192];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_32_4_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_32_4_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[512];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_32_4_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1024];
+  *page_cnt = 4;
+  return buf;
+}
+uint8_t *u8g2_m_16_12_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[128];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_16_12_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_16_12_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1536];
+  *page_cnt = 12;
+  return buf;
+}
+uint8_t *u8g2_m_24_4_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[192];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_24_4_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[384];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_24_4_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[768];
+  *page_cnt = 4;
+  return buf;
+}
+uint8_t *u8g2_m_13_8_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[104];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_13_8_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[208];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_13_8_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[832];
+  *page_cnt = 8;
+  return buf;
+}
+uint8_t *u8g2_m_11_6_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[88];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_11_6_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[176];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_11_6_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[528];
+  *page_cnt = 6;
+  return buf;
+}
+uint8_t *u8g2_m_12_9_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[96];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_12_9_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[192];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_12_9_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[864];
+  *page_cnt = 9;
+  return buf;
+}
+uint8_t *u8g2_m_24_8_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[192];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_24_8_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[384];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_24_8_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1536];
+  *page_cnt = 8;
+  return buf;
+}
+uint8_t *u8g2_m_30_8_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[240];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_30_8_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[480];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_30_8_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1920];
+  *page_cnt = 8;
+  return buf;
+}
+uint8_t *u8g2_m_30_15_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[240];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_30_15_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[480];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_30_15_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[3600];
+  *page_cnt = 15;
+  return buf;
+}
+uint8_t *u8g2_m_30_16_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[240];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_30_16_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[480];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_30_16_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[3840];
+  *page_cnt = 16;
+  return buf;
+}
+uint8_t *u8g2_m_20_16_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[160];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_20_16_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[320];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_20_16_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[2560];
+  *page_cnt = 16;
+  return buf;
+}
+uint8_t *u8g2_m_20_13_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[160];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_20_13_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[320];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_20_13_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[2080];
+  *page_cnt = 13;
+  return buf;
+}
+uint8_t *u8g2_m_30_20_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[240];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_30_20_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[480];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_30_20_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[4800];
+  *page_cnt = 20;
+  return buf;
+}
+uint8_t *u8g2_m_17_4_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[136];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_17_4_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[272];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_17_4_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[544];
+  *page_cnt = 4;
+  return buf;
+}
+uint8_t *u8g2_m_17_8_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[136];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_17_8_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[272];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_17_8_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1088];
+  *page_cnt = 8;
+  return buf;
+}
+uint8_t *u8g2_m_32_16_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_32_16_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[512];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_32_16_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[4096];
+  *page_cnt = 16;
+  return buf;
+}
+uint8_t *u8g2_m_32_20_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[256];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_32_20_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[512];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_32_20_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[5120];
+  *page_cnt = 20;
+  return buf;
+}
+uint8_t *u8g2_m_22_13_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[176];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_22_13_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[352];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_22_13_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[2288];
+  *page_cnt = 13;
+  return buf;
+}
+uint8_t *u8g2_m_20_10_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[160];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_20_10_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[320];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_20_10_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1600];
+  *page_cnt = 10;
+  return buf;
+}
+uint8_t *u8g2_m_22_9_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[176];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_22_9_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[352];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_22_9_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[1584];
+  *page_cnt = 9;
+  return buf;
+}
+uint8_t *u8g2_m_25_25_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[200];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_25_25_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[400];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_25_25_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[5000];
+  *page_cnt = 25;
+  return buf;
+}
+uint8_t *u8g2_m_37_16_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[296];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_37_16_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[592];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_37_16_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[4736];
+  *page_cnt = 16;
+  return buf;
+}
+uint8_t *u8g2_m_40_30_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[320];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_40_30_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[640];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_40_30_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[9600];
+  *page_cnt = 30;
+  return buf;
+}
+uint8_t *u8g2_m_4_1_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[32];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_4_1_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[64];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_4_1_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[32];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_1_1_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[8];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_1_1_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[16];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_1_1_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[8];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_48_30_1(uint8_t *page_cnt)
+{
+  static uint8_t buf[384];
+  *page_cnt = 1;
+  return buf;
+}
+uint8_t *u8g2_m_48_30_2(uint8_t *page_cnt)
+{
+  static uint8_t buf[768];
+  *page_cnt = 2;
+  return buf;
+}
+uint8_t *u8g2_m_48_30_f(uint8_t *page_cnt)
+{
+  static uint8_t buf[11520];
+  *page_cnt = 30;
+  return buf;
+}
+/* end of generated code */

lib/U8g2_ID942-tweaked/src/clib/u8g2_hvline.c

@@ -0,0 +1,267 @@
+/*
+
+  u8g2_hvline.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  Calltree
+    void u8g2_DrawHVLine(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+    u8g2->cb->draw_l90
+    void u8g2_draw_hv_line_4dir(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+    void u8g2_draw_hv_line_2dir(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+    void u8g2_draw_pixel(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y)
+
+*/
+
+#include "u8g2.h"
+#include <assert.h>
+
+
+
+
+#ifdef U8G2_WITH_CLIPPING
+
+/*
+  Description:
+    clip range from a (included) to b (excluded) agains c (included) to d (excluded)
+  Assumptions:
+    a <= b		(violation is checked and handled correctly)
+    c <= d		(this is not checked)
+  will return 0 if there is no intersection and if a > b
+
+  optimized clipping: c is set to 0
+*/
+//static uint8_t u8g2_clip_intersection(u8g2_uint_t *ap, u8g2_uint_t *bp, u8g2_uint_t c, u8g2_uint_t d)
+static uint8_t u8g2_clip_intersection(u8g2_uint_t *ap, u8g2_uint_t *bp, u8g2_uint_t d)
+{
+  u8g2_uint_t a = *ap;
+  u8g2_uint_t b = *bp;
+  
+  /* handle the a>b case correctly. If code and time is critical, this could */
+  /* be removed completly (be aware about memory curruption for wrong */
+  /* arguments) or return 0 for a>b (will lead to skipped lines for wrong */
+  /* arguments) */  
+  
+  /* removing the following if clause completly may lead to memory corruption of a>b */
+  if ( a > b )
+  {    
+    /* replacing this if with a simple "return 0;" will not handle the case with negative a */    
+    if ( a < d )
+    {
+      b = d;
+      b--;
+      *bp = b;
+    }
+    else
+    {
+      a = 0;
+      *ap = a;
+    }
+  }
+  
+  /* from now on, the asumption a <= b is ok */
+  
+  if ( a >= d )
+    return 0;
+  if ( b <= 0 )		// was b <= c, could be replaced with b == 0
+    return 0;
+  //if ( a < c )		// never true with c == 0
+  //  *ap = c;
+  if ( b > d )
+    *bp = d;
+    
+  return 1;
+}
+
+
+
+/*
+  x,y		Upper left position of the line within the pixel buffer 
+  len		length of the line in pixel, len must not be 0
+  dir		0: horizontal line (left to right)
+		1: vertical line (top to bottom)
+  This function first adjusts the y position to the local buffer. Then it
+  will clip the line and call u8g2_draw_low_level_hv_line()
+
+*/
+static void u8g2_draw_hv_line_2dir(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  u8g2_uint_t a;
+  register u8g2_uint_t w, h;
+
+  h = u8g2->pixel_buf_height;		// this must be the real buffer height
+  w = u8g2->pixel_buf_width;		// this could be replaced by u8g2->u8x8.display_info->pixel_width
+
+
+  if ( dir == 0 )
+  {
+    if ( y >= h )
+      return;
+    a = x;
+    a += len;
+    if ( u8g2_clip_intersection(&x, &a, w) == 0 )
+      return;
+    len = a;
+    len -= x;
+  }
+  else
+  {
+    if ( x >= w )
+      return;
+    a = y;
+    a += len;
+    if ( u8g2_clip_intersection(&y, &a, h) == 0 )
+      return;
+    len = a;
+    len -= y;
+  }
+  
+  u8g2->ll_hvline(u8g2, x, y, len, dir);
+}
+
+#endif
+
+/*
+  x,y		Upper left position of the line (full screen coordinates)
+  len		length of the line in pixel, len must not be 0
+  dir		0: horizontal line (left to right)
+		1: vertical line (top to bottom)
+		2: horizontal line (right to left)
+		3: vertical line (bottom to top)
+
+  This function will remove directions 2 and 3. Instead 0 and 1 are used.
+
+*/
+void u8g2_draw_hv_line_4dir(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+#ifdef U8G2_WITH_HVLINE_COUNT
+  u8g2->hv_cnt++;
+#endif /* U8G2_WITH_HVLINE_COUNT */   
+
+  /* transform to pixel buffer coordinates */
+   y -= u8g2->tile_curr_row*8;
+
+  /* additional optimization for one pixel draw */
+  /* requires about 60 bytes on the ATMega flash memory */
+  /* 20% improvement for single pixel draw test in FPS.ino */
+#ifdef U8G2_WITH_ONE_PIXEL_OPTIMIZATION
+  if ( len == 1 )
+  {
+    if ( x < u8g2->pixel_buf_width && y < u8g2->pixel_buf_height )
+      u8g2->ll_hvline(u8g2, x, y, len, dir);
+    return;
+  }
+#endif
+  
+  if ( dir == 2 )
+  {
+    x -= len;
+    x++;
+  }
+  else if ( dir == 3 )
+  {
+    y -= len;
+    y++;
+  }
+  dir &= 1;  
+#ifdef U8G2_WITH_CLIPPING
+  u8g2_draw_hv_line_2dir(u8g2, x, y, len, dir);
+#else
+  u8g2->ll_hvline(u8g2, x, y, len, dir);
+#endif
+}
+
+/*
+  This is the toplevel function for the hv line draw procedures.
+  This function should be called by the user.
+*/
+void u8g2_DrawHVLine(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  /* Make a call to the callback function (e.g. u8g2_draw_l90_r0). */
+  /* The callback may rotate the hv line */
+  /* after rotation this will call u8g2_draw_hv_line_4dir() */
+  if ( len != 0 )
+    u8g2->cb->draw_l90(u8g2, x, y, len, dir);
+}
+
+void u8g2_DrawHLine(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len)
+{
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  u8g2_DrawHVLine(u8g2, x, y, len, 0);
+}
+
+void u8g2_DrawVLine(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len)
+{
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+1, y+len) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  u8g2_DrawHVLine(u8g2, x, y, len, 1);
+}
+
+void u8g2_DrawPixel(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y)
+{
+#ifdef U8G2_WITH_INTERSECTION
+  if ( y < u8g2->user_y0 )
+    return;
+  if ( y >= u8g2->user_y1 )
+    return;
+  if ( x < u8g2->user_x0 )
+    return;
+  if ( x >= u8g2->user_x1 )
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+}
+
+/*
+  Assign the draw color for all drawing functions.
+  color may be 0 or 1. The actual color is defined by the display.
+  With color = 1 the drawing function will set the display memory to 1.
+  For OLEDs this ususally means, that the pixel is enabled and the LED 
+  at the pixel is turned on.
+  On an LCD it usually means that the LCD segment of the pixel is enabled, 
+  which absorbs the light.
+  For eInk/ePaper it means black ink.
+
+  7 Jan 2017: Allow color value 2 for XOR operation.
+  
+*/
+void u8g2_SetDrawColor(u8g2_t *u8g2, uint8_t color)
+{
+  u8g2->draw_color = color;	/* u8g2_SetDrawColor: just assign the argument */ 
+  if ( color >= 3 )
+    u8g2->draw_color = 1;	/* u8g2_SetDrawColor: make color as one if arg is invalid */
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_input_value.c

@@ -0,0 +1,150 @@
+/*
+
+  u8g2_input_value.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include "u8g2.h"
+
+/*
+  return:
+    0: value is not changed (HOME/Break Button pressed)
+    1: value has been updated
+*/
+
+uint8_t u8g2_UserInterfaceInputValue(u8g2_t *u8g2, const char *title, const char *pre, uint8_t *value, uint8_t lo, uint8_t hi, uint8_t digits, const char *post)
+{
+  uint8_t line_height;
+  uint8_t height;
+  u8g2_uint_t pixel_height;
+  u8g2_uint_t  y, yy;
+  u8g2_uint_t  pixel_width;
+  u8g2_uint_t  x, xx;
+  
+  uint8_t local_value = *value;
+  //uint8_t r; /* not used ??? */
+  uint8_t event;
+
+  /* only horizontal strings are supported, so force this here */
+  u8g2_SetFontDirection(u8g2, 0);
+
+  /* force baseline position */
+  u8g2_SetFontPosBaseline(u8g2);
+  
+  /* calculate line height */
+  line_height = u8g2_GetAscent(u8g2);
+  line_height -= u8g2_GetDescent(u8g2);
+  
+  
+  /* calculate overall height of the input value box */
+  height = 1;	/* value input line */
+  height += u8x8_GetStringLineCnt(title);
+
+  /* calculate the height in pixel */
+  pixel_height = height;
+  pixel_height *= line_height;
+
+
+  /* calculate offset from top */
+  y = 0;
+  if ( pixel_height < u8g2_GetDisplayHeight(u8g2)  )
+  {
+    y = u8g2_GetDisplayHeight(u8g2);
+    y -= pixel_height;
+    y /= 2;
+  }
+  
+  /* calculate offset from left for the label */
+  x = 0;
+  pixel_width = u8g2_GetUTF8Width(u8g2, pre);
+  pixel_width += u8g2_GetUTF8Width(u8g2, "0") * digits;
+  pixel_width += u8g2_GetUTF8Width(u8g2, post);
+  if ( pixel_width < u8g2_GetDisplayWidth(u8g2) )
+  {
+    x = u8g2_GetDisplayWidth(u8g2);
+    x -= pixel_width;
+    x /= 2;
+  }
+  
+  /* event loop */
+  for(;;)
+  {
+    u8g2_FirstPage(u8g2);
+    do
+    {
+      /* render */
+      yy = y;
+      yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title);
+      xx = x;
+      xx += u8g2_DrawUTF8(u8g2, xx, yy, pre);
+      xx += u8g2_DrawUTF8(u8g2, xx, yy, u8x8_u8toa(local_value, digits));
+      u8g2_DrawUTF8(u8g2, xx, yy, post);
+    } while( u8g2_NextPage(u8g2) );
+    
+#ifdef U8G2_REF_MAN_PIC
+      return 0;
+#endif
+    
+    for(;;)
+    {
+      event = u8x8_GetMenuEvent(u8g2_GetU8x8(u8g2));
+      if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+      {
+	*value = local_value;
+	return 1;
+      }
+      else if ( event == U8X8_MSG_GPIO_MENU_HOME )
+      {
+	return 0;
+      }
+      else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_UP )
+      {
+	if ( local_value >= hi )
+	  local_value = lo;
+	else
+	  local_value++;
+	break;
+      }
+      else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_DOWN )
+      {
+	if ( local_value <= lo )
+	  local_value = hi;
+	else
+	  local_value--;
+	break;
+      }        
+    }
+  }
+  
+  /* never reached */
+  //return r;  
+}

lib/U8g2_ID942-tweaked/src/clib/u8g2_intersection.c

@@ -0,0 +1,176 @@
+/*
+
+  u8g2_intersection.c 
+  
+  Intersection calculation, code taken from u8g_clip.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+
+#ifdef __GNUC__
+#define U8G2_ALWAYS_INLINE __inline__ __attribute__((always_inline))
+#else
+#define U8G2_ALWAYS_INLINE
+#endif 
+
+
+#ifdef U8G2_WITH_INTERSECTION    
+
+#ifdef OLD_VERSION_WITH_SYMETRIC_BOUNDARIES
+
+/*
+  intersection assumptions:
+    a1 <= a2 is always true    
+    
+    minimized version
+    ---1----0 1             b1 <= a2 && b1 > b2
+    -----1--0 1             b2 >= a1 && b1 > b2
+    ---1-1--- 1             b1 <= a2 && b2 >= a1
+  */
+
+
+/*
+  calculate the intersection between a0/a1 and v0/v1
+  The intersection check returns one if the range of a0/a1 has an intersection with v0/v1.
+  The intersection check includes the boundary values v1 and a1.
+
+  The following asserts will succeed:
+    assert( u8g2_is_intersection_decision_tree(4, 6, 7, 9) == 0 );
+    assert( u8g2_is_intersection_decision_tree(4, 6, 6, 9) != 0 );
+    assert( u8g2_is_intersection_decision_tree(6, 9, 4, 6) != 0 );
+    assert( u8g2_is_intersection_decision_tree(7, 9, 4, 6) == 0 );  
+*/
+
+//static uint8_t U8G2_ALWAYS_INLINE u8g2_is_intersection_decision_tree(u8g_uint_t a0, u8g_uint_t a1, u8g_uint_t v0, u8g_uint_t v1) 
+static uint8_t u8g2_is_intersection_decision_tree(u8g2_uint_t a0, u8g2_uint_t a1, u8g2_uint_t v0, u8g2_uint_t v1) 
+{
+  if ( v0 <= a1 )
+  {
+    if ( v1 >= a0 )
+    {
+      return 1;
+    }
+    else
+    {
+      if ( v0 > v1 )
+      {
+	return 1;
+      }
+      else
+      {
+	return 0;
+      }
+    }
+  }
+  else
+  {
+    if ( v1 >= a0 )
+    {
+      if ( v0 > v1 )
+      {
+	return 1;
+      }
+      else
+      {
+	return 0;
+      }
+    }
+    else
+    {
+      return 0;
+    }
+  }
+}
+
+#endif	/* OLD_VERSION_WITH_SYMETRIC_BOUNDARIES */
+
+
+/*
+  version with asymetric boundaries.
+  a1 and v1 are excluded
+  v0 == v1 is not support end return 1
+*/
+uint8_t u8g2_is_intersection_decision_tree(u8g2_uint_t a0, u8g2_uint_t a1, u8g2_uint_t v0, u8g2_uint_t v1)
+{
+  if ( v0 < a1 )		// v0 <= a1
+  {
+    if ( v1 > a0 )	// v1 >= a0
+    {
+      return 1;
+    }
+    else
+    {
+      if ( v0 > v1 )	// v0 > v1
+      {
+	return 1;
+      }
+      else
+      {
+	return 0;
+      }
+    }
+  }
+  else
+  {
+    if ( v1 > a0 )	// v1 >= a0
+    {
+      if ( v0 > v1 )	// v0 > v1
+      {
+	return 1;
+      }
+      else
+      {
+	return 0;
+      }
+    }
+    else
+    {
+      return 0;
+    }
+  }
+}
+
+
+
+/* upper limits are not included (asymetric boundaries) */
+uint8_t u8g2_IsIntersection(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_uint_t x1, u8g2_uint_t y1)
+{
+  if ( u8g2_is_intersection_decision_tree(u8g2->user_y0, u8g2->user_y1, y0, y1) == 0 )
+    return 0; 
+  
+  return u8g2_is_intersection_decision_tree(u8g2->user_x0, u8g2->user_x1, x0, x1);
+}
+
+
+#endif /* U8G2_WITH_INTERSECTION */
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_kerning.c

@@ -0,0 +1,94 @@
+/*
+
+  u8g2_kerning.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+
+/* this function is used as "u8g2_get_kerning_cb" */
+/*
+uint8_t u8g2_GetNullKerning(u8g2_t *u8g2, uint16_t e1, uint16_t e2)
+{
+  return 0;
+}
+*/
+
+/* this function is used as "u8g2_get_kerning_cb" */
+uint8_t u8g2_GetKerning(U8X8_UNUSED u8g2_t *u8g2, u8g2_kerning_t *kerning, uint16_t e1, uint16_t e2)
+{
+  uint16_t i1, i2, cnt, end;
+  if ( kerning == NULL )
+    return 0;
+  
+  /* search for the encoding in the first table */
+  cnt = kerning->first_table_cnt;
+  cnt--;	/* ignore the last element of the table, which is 0x0ffff */
+  for( i1 = 0; i1 < cnt; i1++ )
+  {
+    if ( kerning->first_encoding_table[i1] == e1 )
+      break;
+  }
+  if ( i1 >= cnt )
+    return 0;	/* e1 not part of the kerning table, return 0 */
+
+  /* get the upper index for i2 */
+  end = kerning->index_to_second_table[i1+1];
+  for( i2 = kerning->index_to_second_table[i1]; i2 < end; i2++ )
+  {
+    if ( kerning->second_encoding_table[i2] == e2 )
+      break;
+  }
+  
+  if ( i2 >= end )
+    return 0;	/* e2 not part of any pair with e1, return 0 */
+  
+  return kerning->kerning_values[i2];
+}
+
+uint8_t u8g2_GetKerningByTable(U8X8_UNUSED u8g2_t *u8g2, const uint16_t *kt, uint16_t e1, uint16_t e2)
+{
+  uint16_t i;
+  i = 0;
+  if ( kt == NULL )
+    return 0;
+  for(;;)
+  {
+    if ( kt[i] == 0x0ffff )
+      break;
+    if ( kt[i] == e1 && kt[i+1] == e2 )
+      return kt[i+2];
+    i+=3;
+  }
+  return 0;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_line.c

@@ -0,0 +1,92 @@
+/*
+
+  u8g2_box.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+
+
+void u8g2_DrawLine(u8g2_t *u8g2, u8g2_uint_t x1, u8g2_uint_t y1, u8g2_uint_t x2, u8g2_uint_t y2)
+{
+  u8g2_uint_t tmp;
+  u8g2_uint_t x,y;
+  u8g2_uint_t dx, dy;
+  u8g2_int_t err;
+  u8g2_int_t ystep;
+
+  uint8_t swapxy = 0;
+  
+  /* no intersection check at the moment, should be added... */
+
+  if ( x1 > x2 ) dx = x1-x2; else dx = x2-x1;
+  if ( y1 > y2 ) dy = y1-y2; else dy = y2-y1;
+
+  if ( dy > dx ) 
+  {
+    swapxy = 1;
+    tmp = dx; dx =dy; dy = tmp;
+    tmp = x1; x1 =y1; y1 = tmp;
+    tmp = x2; x2 =y2; y2 = tmp;
+  }
+  if ( x1 > x2 ) 
+  {
+    tmp = x1; x1 =x2; x2 = tmp;
+    tmp = y1; y1 =y2; y2 = tmp;
+  }
+  err = dx >> 1;
+  if ( y2 > y1 ) ystep = 1; else ystep = -1;
+  y = y1;
+
+#ifndef  U8G2_16BIT
+  if ( x2 == 255 )
+    x2--;
+#else
+  if ( x2 == 0xffff )
+    x2--;
+#endif
+
+  for( x = x1; x <= x2; x++ )
+  {
+    if ( swapxy == 0 ) 
+      u8g2_DrawPixel(u8g2, x, y); 
+    else 
+      u8g2_DrawPixel(u8g2, y, x); 
+    err -= (uint8_t)dy;
+    if ( err < 0 ) 
+    {
+      y += (u8g2_uint_t)ystep;
+      err += (u8g2_uint_t)dx;
+    }
+  }
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_ll_hvline.c

@@ -0,0 +1,359 @@
+/*
+
+  u8g2_ll_hvline.c
+  
+  low level hvline
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  *ptr |= or_mask
+  *ptr ^= xor_mask
+  
+  color = 0:   or_mask = 1, xor_mask = 1
+  color = 1:   or_mask = 1, xor_mask = 0
+  color = 2:   or_mask = 0, xor_mask = 1
+
+  if ( color <= 1 )
+    or_mask  = mask;
+  if ( color != 1 )
+    xor_mask = mask;
+    
+*/
+
+#include "u8g2.h"
+#include <assert.h>
+
+/*=================================================*/
+/*
+  u8g2_ll_hvline_vertical_top_lsb
+    SSD13xx
+    UC1701    
+*/
+
+
+#ifdef U8G2_HVLINE_SPEED_OPTIMIZATION
+
+/*
+  x,y		Upper left position of the line within the local buffer (not the display!)
+  len		length of the line in pixel, len must not be 0
+  dir		0: horizontal line (left to right)
+		1: vertical line (top to bottom)
+  asumption: 
+    all clipping done
+*/
+void u8g2_ll_hvline_vertical_top_lsb(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  uint16_t offset;
+  uint8_t *ptr;
+  uint8_t bit_pos, mask;
+  uint8_t or_mask, xor_mask;
+
+  //assert(x >= u8g2->buf_x0);
+  //assert(x < u8g2_GetU8x8(u8g2)->display_info->tile_width*8);
+  //assert(y >= u8g2->buf_y0);
+  //assert(y < u8g2_GetU8x8(u8g2)->display_info->tile_height*8);
+  
+  /* bytes are vertical, lsb on top (y=0), msb at bottom (y=7) */
+  bit_pos = y;		/* overflow truncate is ok here... */
+  bit_pos &= 7; 	/* ... because only the lowest 3 bits are needed */
+  mask = 1;
+  mask <<= bit_pos;
+
+  or_mask = 0;
+  xor_mask = 0;
+  if ( u8g2->draw_color <= 1 )
+    or_mask  = mask;
+  if ( u8g2->draw_color != 1 )
+    xor_mask = mask;
+
+
+  offset = y;		/* y might be 8 or 16 bit, but we need 16 bit, so use a 16 bit variable */
+  offset &= ~7;
+  offset *= u8g2_GetU8x8(u8g2)->display_info->tile_width;
+  ptr = u8g2->tile_buf_ptr;
+  ptr += offset;
+  ptr += x;
+  
+  if ( dir == 0 )
+  {
+      do
+      {
+	*ptr |= or_mask;
+	*ptr ^= xor_mask;
+	ptr++;
+	len--;
+      } while( len != 0 );
+  }
+  else
+  {    
+    do
+    {
+      *ptr |= or_mask;
+      *ptr ^= xor_mask;
+      
+      bit_pos++;
+      bit_pos &= 7;
+
+      len--;
+
+      if ( bit_pos == 0 )
+      {
+	ptr+=u8g2->pixel_buf_width;	/* 6 Jan 17: Changed u8g2->width to u8g2->pixel_buf_width, issue #148 */
+		
+	if ( u8g2->draw_color <= 1 )
+	  or_mask  = 1;
+	if ( u8g2->draw_color != 1 )
+	  xor_mask = 1;
+      }
+      else
+      {
+	or_mask <<= 1;
+	xor_mask <<= 1;
+      }
+    } while( len != 0 );
+  }
+}
+
+
+
+#else /* U8G2_HVLINE_SPEED_OPTIMIZATION */
+
+/*
+  x,y position within the buffer
+*/
+static void u8g2_draw_pixel_vertical_top_lsb(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y)
+{
+  uint16_t offset;
+  uint8_t *ptr;
+  uint8_t bit_pos, mask;
+  
+  //assert(x >= u8g2->buf_x0);
+  //assert(x < u8g2_GetU8x8(u8g2)->display_info->tile_width*8);
+  //assert(y >= u8g2->buf_y0);
+  //assert(y < u8g2_GetU8x8(u8g2)->display_info->tile_height*8);
+  
+  /* bytes are vertical, lsb on top (y=0), msb at bottom (y=7) */
+  bit_pos = y;		/* overflow truncate is ok here... */
+  bit_pos &= 7; 	/* ... because only the lowest 3 bits are needed */
+  mask = 1;
+  mask <<= bit_pos;
+
+  offset = y;		/* y might be 8 or 16 bit, but we need 16 bit, so use a 16 bit variable */
+  offset &= ~7;
+  offset *= u8g2_GetU8x8(u8g2)->display_info->tile_width;
+  ptr = u8g2->tile_buf_ptr;
+  ptr += offset;
+  ptr += x;
+
+
+  if ( u8g2->draw_color <= 1 )
+    *ptr |= mask;
+  if ( u8g2->draw_color != 1 )
+    *ptr ^= mask;
+
+}
+
+/*
+  x,y		Upper left position of the line within the local buffer (not the display!)
+  len		length of the line in pixel, len must not be 0
+  dir		0: horizontal line (left to right)
+		1: vertical line (top to bottom)
+  asumption: 
+    all clipping done
+*/
+void u8g2_ll_hvline_vertical_top_lsb(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  if ( dir == 0 )
+  {
+    do
+    {
+      u8g2_draw_pixel_vertical_top_lsb(u8g2, x, y);
+      x++;
+      len--;
+    } while( len != 0 );
+  }
+  else
+  {
+    do
+    {
+      u8g2_draw_pixel_vertical_top_lsb(u8g2, x, y);
+      y++;
+      len--;
+    } while( len != 0 );
+  }
+}
+
+
+#endif /* U8G2_HVLINE_SPEED_OPTIMIZATION */
+
+/*=================================================*/
+/*
+  u8g2_ll_hvline_horizontal_right_lsb
+    ST7920
+*/
+
+#ifdef U8G2_HVLINE_SPEED_OPTIMIZATION
+
+/*
+  x,y		Upper left position of the line within the local buffer (not the display!)
+  len		length of the line in pixel, len must not be 0
+  dir		0: horizontal line (left to right)
+		1: vertical line (top to bottom)
+  asumption: 
+    all clipping done
+*/
+
+void u8g2_ll_hvline_horizontal_right_lsb(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  uint16_t offset;
+  uint8_t *ptr;
+  uint8_t bit_pos;
+  uint8_t mask;
+  uint8_t tile_width = u8g2_GetU8x8(u8g2)->display_info->tile_width;
+
+  bit_pos = x;		/* overflow truncate is ok here... */
+  bit_pos &= 7; 	/* ... because only the lowest 3 bits are needed */
+  mask = 128;
+  mask >>= bit_pos;
+
+  offset = y;		/* y might be 8 or 16 bit, but we need 16 bit, so use a 16 bit variable */
+  offset *= tile_width;
+  offset += x>>3;
+  ptr = u8g2->tile_buf_ptr;
+  ptr += offset;
+  
+  if ( dir == 0 )
+  {
+      
+    do
+    {
+
+      if ( u8g2->draw_color <= 1 )
+	*ptr |= mask;
+      if ( u8g2->draw_color != 1 )
+	*ptr ^= mask;
+      
+      mask >>= 1;
+      if ( mask == 0 )
+      {
+	mask = 128;
+        ptr++;
+      }
+      
+      //x++;
+      len--;
+    } while( len != 0 );
+  }
+  else
+  {
+    do
+    {
+      if ( u8g2->draw_color <= 1 )
+	*ptr |= mask;
+      if ( u8g2->draw_color != 1 )
+	*ptr ^= mask;
+      
+      ptr += tile_width;
+      //y++;
+      len--;
+    } while( len != 0 );
+  }
+}
+
+#else /* U8G2_HVLINE_SPEED_OPTIMIZATION */
+
+
+/*
+  x,y position within the buffer
+*/
+static void u8g2_draw_pixel_horizontal_right_lsb(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y)
+{
+  uint16_t offset;
+  uint8_t *ptr;
+  uint8_t bit_pos, mask;
+
+  //assert(x >= u8g2->buf_x0);
+  //assert(x < u8g2_GetU8x8(u8g2)->display_info->tile_width*8);
+  //assert(y >= u8g2->buf_y0);
+  //assert(y < u8g2_GetU8x8(u8g2)->display_info->tile_height*8);
+  
+  /* bytes are vertical, lsb on top (y=0), msb at bottom (y=7) */
+  bit_pos = x;		/* overflow truncate is ok here... */
+  bit_pos &= 7; 	/* ... because only the lowest 3 bits are needed */
+  mask = 128;
+  mask >>= bit_pos;
+  x >>= 3;
+
+  offset = y;		/* y might be 8 or 16 bit, but we need 16 bit, so use a 16 bit variable */
+  offset *= u8g2_GetU8x8(u8g2)->display_info->tile_width;
+  offset += x;
+  ptr = u8g2->tile_buf_ptr;
+  ptr += offset;
+  
+
+  if ( u8g2->draw_color <= 1 )
+    *ptr |= mask;
+  if ( u8g2->draw_color != 1 )
+    *ptr ^= mask;
+  
+}
+
+/*
+  x,y		Upper left position of the line within the local buffer (not the display!)
+  len		length of the line in pixel, len must not be 0
+  dir		0: horizontal line (left to right)
+		1: vertical line (top to bottom)
+  asumption: 
+    all clipping done
+*/
+void u8g2_ll_hvline_horizontal_right_lsb(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  if ( dir == 0 )
+  {
+    do
+    {
+      u8g2_draw_pixel_horizontal_right_lsb(u8g2, x, y);
+      x++;
+      len--;
+    } while( len != 0 );
+  }
+  else
+  {
+    do
+    {
+      u8g2_draw_pixel_horizontal_right_lsb(u8g2, x, y);
+      y++;
+      len--;
+    } while( len != 0 );
+  }
+}
+
+#endif /* U8G2_HVLINE_SPEED_OPTIMIZATION */

lib/U8g2_ID942-tweaked/src/clib/u8g2_message.c

@@ -0,0 +1,197 @@
+/*
+
+  u8g2_message.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include "u8g2.h"
+
+#define SPACE_BETWEEN_BUTTONS_IN_PIXEL 6
+#define SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL 3
+
+uint8_t u8g2_draw_button_line(u8g2_t *u8g2, u8g2_uint_t y, u8g2_uint_t w, uint8_t cursor, const char *s)
+{
+  u8g2_uint_t button_line_width;
+	
+  uint8_t i;
+  uint8_t cnt;
+  uint8_t is_invert;
+	
+  u8g2_uint_t d;
+  u8g2_uint_t x;
+	
+  cnt = u8x8_GetStringLineCnt(s);
+  
+	
+  /* calculate the width of the button line */
+  button_line_width = 0;
+  for( i = 0; i < cnt; i++ )
+  {
+    button_line_width += u8g2_GetUTF8Width(u8g2, u8x8_GetStringLineStart(i, s));
+  }
+  button_line_width += (cnt-1)*SPACE_BETWEEN_BUTTONS_IN_PIXEL;	/* add some space between the buttons */
+  
+  /* calculate the left offset */
+  d = 0;
+  if ( button_line_width < w )
+  {
+    d = w;
+    d -= button_line_width;
+    d /= 2;
+  }
+  
+  /* draw the buttons */
+  x = d;
+  for( i = 0; i < cnt; i++ )
+  {
+    is_invert = 0;
+    if ( i == cursor )
+      is_invert = 1;
+
+    u8g2_DrawUTF8Line(u8g2, x, y, 0, u8x8_GetStringLineStart(i, s), 1, is_invert);
+    x += u8g2_GetUTF8Width(u8g2, u8x8_GetStringLineStart(i, s));
+    x += SPACE_BETWEEN_BUTTONS_IN_PIXEL;
+  }
+  
+  /* return the number of buttons */
+  return cnt;
+}
+
+/*
+  title1:	Multiple lines,separated by '\n'
+  title2:	A single line/string which is terminated by '\0' or '\n' . "title2" accepts the return value from u8x8_GetStringLineStart()
+  title3:	Multiple lines,separated by '\n'
+  buttons:	one more more buttons separated by '\n' and terminated with '\0'
+  side effects:
+    u8g2_SetFontDirection(u8g2, 0);
+    u8g2_SetFontPosBaseline(u8g2);
+*/
+
+uint8_t u8g2_UserInterfaceMessage(u8g2_t *u8g2, const char *title1, const char *title2, const char *title3, const char *buttons)
+{
+  uint8_t height;
+  uint8_t line_height;
+  u8g2_uint_t pixel_height;
+  u8g2_uint_t y, yy;
+	
+  uint8_t cursor = 0;
+  uint8_t button_cnt;
+  uint8_t event;
+	
+  /* only horizontal strings are supported, so force this here */
+  u8g2_SetFontDirection(u8g2, 0);
+
+  /* force baseline position */
+  u8g2_SetFontPosBaseline(u8g2);
+	
+	
+  /* calculate line height */
+  line_height = u8g2_GetAscent(u8g2);
+  line_height -= u8g2_GetDescent(u8g2);
+
+  /* calculate overall height of the message box in lines*/
+  height = 1;	/* button line */
+  height += u8x8_GetStringLineCnt(title1);
+  if ( title2 != NULL )
+    height++;
+  height += u8x8_GetStringLineCnt(title3);
+  
+  /* calculate the height in pixel */
+  pixel_height = height;
+  pixel_height *= line_height;
+  
+  /* ... and add the space between the text and the buttons */
+  pixel_height +=SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL;
+  
+  /* calculate offset from top */
+  y = 0;
+  if ( pixel_height < u8g2_GetDisplayHeight(u8g2)   )
+  {
+    y = u8g2_GetDisplayHeight(u8g2);
+    y -= pixel_height;
+    y /= 2;
+  }
+  y += u8g2_GetAscent(u8g2);
+
+  
+  for(;;)
+  {
+      u8g2_FirstPage(u8g2);
+      do
+      {
+	  yy = y;
+	  /* draw message box */
+	  
+	  yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title1);
+	  if ( title2 != NULL )
+	  {
+	    u8g2_DrawUTF8Line(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), title2, 0, 0);
+	    yy+=line_height;
+	  }
+	  yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title3);
+	  yy += SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL;
+
+	  button_cnt = u8g2_draw_button_line(u8g2, yy, u8g2_GetDisplayWidth(u8g2), cursor, buttons);
+	  
+      } while( u8g2_NextPage(u8g2) );
+
+#ifdef U8G2_REF_MAN_PIC
+      return 0;
+#endif
+	  
+      for(;;)
+      {
+	    event = u8x8_GetMenuEvent(u8g2_GetU8x8(u8g2));
+	    if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+	      return cursor+1;
+	    else if ( event == U8X8_MSG_GPIO_MENU_HOME )
+	      return 0;
+	    else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_DOWN )
+	    {
+	      cursor++;
+	      if ( cursor >= button_cnt )
+		cursor = 0;
+	      break;
+	    }
+	    else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_UP )
+	    {
+	      if ( cursor == 0 )
+		cursor = button_cnt;
+	      cursor--;
+	      break;
+	    }    
+      }
+  }
+  /* never reached */
+  //return 0;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_polygon.c

@@ -0,0 +1,346 @@
+/*
+
+  u8g22_polygon.c
+
+*/	
+
+
+#include "u8g2.h"
+
+
+
+
+/*===========================================*/
+/* local definitions */
+
+typedef int16_t pg_word_t;
+
+
+struct pg_point_struct
+{
+  pg_word_t x;
+  pg_word_t y;
+};
+
+typedef struct _pg_struct pg_struct;	/* forward declaration */
+
+struct pg_edge_struct
+{
+  pg_word_t x_direction;	/* 1, if x2 is greater than x1, -1 otherwise */
+  pg_word_t height;
+  pg_word_t current_x_offset;
+  pg_word_t error_offset;
+  
+  /* --- line loop --- */
+  pg_word_t current_y;
+  pg_word_t max_y;
+  pg_word_t current_x;
+  pg_word_t error;
+
+  /* --- outer loop --- */
+  uint8_t (*next_idx_fn)(pg_struct *pg, uint8_t i);
+  uint8_t curr_idx;
+};
+
+/* maximum number of points in the polygon */
+/* can be redefined, but highest possible value is 254 */
+#define PG_MAX_POINTS 6
+
+/* index numbers for the pge structures below */
+#define PG_LEFT 0
+#define PG_RIGHT 1
+
+
+struct _pg_struct
+{
+  struct pg_point_struct list[PG_MAX_POINTS];
+  uint8_t cnt;
+  uint8_t is_min_y_not_flat;
+  pg_word_t total_scan_line_cnt;
+  struct pg_edge_struct pge[2];	/* left and right line draw structures */
+};
+
+
+/*===========================================*/
+/* procedures, which should not be inlined (save as much flash ROM as possible */
+
+#define PG_NOINLINE U8G2_NOINLINE
+
+static uint8_t pge_Next(struct pg_edge_struct *pge) PG_NOINLINE;
+static uint8_t pg_inc(pg_struct *pg, uint8_t i) PG_NOINLINE;
+static uint8_t pg_dec(pg_struct *pg, uint8_t i) PG_NOINLINE;
+static void pg_expand_min_y(pg_struct *pg, pg_word_t min_y, uint8_t pge_idx) PG_NOINLINE;
+static void pg_line_init(pg_struct * const pg, uint8_t pge_index) PG_NOINLINE;
+
+/*===========================================*/
+/* line draw algorithm */
+
+static uint8_t pge_Next(struct pg_edge_struct *pge)
+{
+  if ( pge->current_y >= pge->max_y )
+    return 0;
+  
+  pge->current_x += pge->current_x_offset;
+  pge->error += pge->error_offset;
+  if ( pge->error > 0 )
+  {
+    pge->current_x += pge->x_direction;
+    pge->error -= pge->height;
+  }  
+  
+  pge->current_y++;
+  return 1;
+}
+
+/* assumes y2 > y1 */
+static void pge_Init(struct pg_edge_struct *pge, pg_word_t x1, pg_word_t y1, pg_word_t x2, pg_word_t y2)
+{
+  pg_word_t dx = x2 - x1;
+  pg_word_t width;
+
+  pge->height = y2 - y1;
+  pge->max_y = y2;
+  pge->current_y = y1;
+  pge->current_x = x1;
+
+  if ( dx >= 0 )
+  {
+    pge->x_direction = 1;
+    width = dx;
+    pge->error = 0;
+  }
+  else
+  {
+    pge->x_direction = -1;
+    width = -dx;
+    pge->error = 1 - pge->height;
+  }
+  
+  pge->current_x_offset = dx / pge->height;
+  pge->error_offset = width % pge->height;
+}
+
+/*===========================================*/
+/* convex polygon algorithm */
+
+static uint8_t pg_inc(pg_struct *pg, uint8_t i)
+{
+    i++;
+    if ( i >= pg->cnt )
+      i = 0;
+    return i;
+}
+
+static uint8_t pg_dec(pg_struct *pg, uint8_t i)
+{
+    i--;
+    if ( i >= pg->cnt )
+      i = pg->cnt-1;
+    return i;
+}
+
+static void pg_expand_min_y(pg_struct *pg, pg_word_t min_y, uint8_t pge_idx)
+{
+  uint8_t i = pg->pge[pge_idx].curr_idx;
+  for(;;)
+  {
+    i = pg->pge[pge_idx].next_idx_fn(pg, i);
+    if ( pg->list[i].y != min_y )
+      break;	
+    pg->pge[pge_idx].curr_idx = i;
+  }
+}
+
+static uint8_t pg_prepare(pg_struct *pg)
+{
+  pg_word_t max_y;
+  pg_word_t min_y;
+  uint8_t i;
+
+  /* setup the next index procedures */
+  pg->pge[PG_RIGHT].next_idx_fn = pg_inc;
+  pg->pge[PG_LEFT].next_idx_fn = pg_dec;
+  
+  /* search for highest and lowest point */
+  max_y = pg->list[0].y;
+  min_y = pg->list[0].y;
+  pg->pge[PG_LEFT].curr_idx = 0;
+  for( i = 1; i < pg->cnt; i++ )
+  {
+    if ( max_y < pg->list[i].y )
+    {
+      max_y = pg->list[i].y;
+    }
+    if ( min_y > pg->list[i].y )
+    {
+      pg->pge[PG_LEFT].curr_idx = i;
+      min_y = pg->list[i].y;
+    }
+  }
+
+  /* calculate total number of scan lines */
+  pg->total_scan_line_cnt = max_y;
+  pg->total_scan_line_cnt -= min_y;
+  
+  /* exit if polygon height is zero */
+  if ( pg->total_scan_line_cnt == 0 )
+    return 0;
+  
+  /* if the minimum y side is flat, try to find the lowest and highest x points */
+  pg->pge[PG_RIGHT].curr_idx = pg->pge[PG_LEFT].curr_idx;  
+  pg_expand_min_y(pg, min_y, PG_RIGHT);
+  pg_expand_min_y(pg, min_y, PG_LEFT);
+  
+  /* check if the min side is really flat (depends on the x values) */
+  pg->is_min_y_not_flat = 1;
+  if ( pg->list[pg->pge[PG_LEFT].curr_idx].x != pg->list[pg->pge[PG_RIGHT].curr_idx].x )
+  {
+    pg->is_min_y_not_flat = 0;
+  }
+  else
+  {
+    pg->total_scan_line_cnt--;
+    if ( pg->total_scan_line_cnt == 0 )
+      return 0;
+  }
+
+  return 1;
+}
+
+static void pg_hline(pg_struct *pg, u8g2_t *u8g2)
+{
+  pg_word_t x1, x2, y;
+  x1 = pg->pge[PG_LEFT].current_x;
+  x2 = pg->pge[PG_RIGHT].current_x;
+  y = pg->pge[PG_RIGHT].current_y;
+  
+  if ( y < 0 )
+    return;
+  if ( y >= u8g2_GetDisplayHeight(u8g2) )  // does not work for 256x64 display???
+    return;
+  if ( x1 < x2 )
+  {
+    if ( x2 < 0 )
+      return;
+    if ( x1 >= u8g2_GetDisplayWidth(u8g2) )
+      return;
+    if ( x1 < 0 )
+      x1 = 0;
+    if ( x2 >= u8g2_GetDisplayWidth(u8g2) )
+      x2 = u8g2_GetDisplayWidth(u8g2);
+    u8g2_DrawHLine(u8g2, x1, y, x2 - x1);
+  }
+  else
+  {
+    if ( x1 < 0 )
+      return;
+    if ( x2 >= u8g2_GetDisplayWidth(u8g2) )
+      return;
+    if ( x2 < 0 )
+      x1 = 0;
+    if ( x1 >= u8g2_GetDisplayWidth(u8g2) )
+      x1 = u8g2_GetDisplayWidth(u8g2);
+    u8g2_DrawHLine(u8g2, x2, y, x1 - x2);
+  }
+}
+
+static void pg_line_init(pg_struct * const pg, uint8_t pge_index)
+{
+  struct pg_edge_struct  *pge = pg->pge+pge_index;
+  uint8_t idx;  
+  pg_word_t x1;
+  pg_word_t y1;
+  pg_word_t x2;
+  pg_word_t y2;
+
+  idx = pge->curr_idx;  
+  y1 = pg->list[idx].y;
+  x1 = pg->list[idx].x;
+  idx = pge->next_idx_fn(pg, idx);
+  y2 = pg->list[idx].y;
+  x2 = pg->list[idx].x; 
+  pge->curr_idx = idx;
+  
+  pge_Init(pge, x1, y1, x2, y2);
+}
+
+static void pg_exec(pg_struct *pg, u8g2_t *u8g2)
+{
+  pg_word_t i = pg->total_scan_line_cnt;
+
+  /* first line is skipped if the min y line is not flat */
+  pg_line_init(pg, PG_LEFT);		
+  pg_line_init(pg, PG_RIGHT);
+  
+  if ( pg->is_min_y_not_flat != 0 )
+  {
+    pge_Next(&(pg->pge[PG_LEFT])); 
+    pge_Next(&(pg->pge[PG_RIGHT]));
+  }
+
+  do
+  {
+    pg_hline(pg, u8g2);
+    while ( pge_Next(&(pg->pge[PG_LEFT])) == 0 )
+    {
+      pg_line_init(pg, PG_LEFT);
+    }
+    while ( pge_Next(&(pg->pge[PG_RIGHT])) == 0 )
+    {
+      pg_line_init(pg, PG_RIGHT);
+    }
+    i--;
+  } while( i > 0 );
+}
+
+/*===========================================*/
+/* API procedures */
+
+static void pg_ClearPolygonXY(pg_struct *pg)
+{
+  pg->cnt = 0;
+}
+
+static void pg_AddPolygonXY(pg_struct *pg, int16_t x, int16_t y)
+{
+  if ( pg->cnt < PG_MAX_POINTS )
+  {
+    pg->list[pg->cnt].x = x;
+    pg->list[pg->cnt].y = y;
+    pg->cnt++;
+  }
+}
+
+static void pg_DrawPolygon(pg_struct *pg, u8g2_t *u8g2)
+{
+  if ( pg_prepare(pg) == 0 )
+    return;
+  pg_exec(pg, u8g2);
+}
+
+pg_struct u8g2_pg;
+
+void u8g2_ClearPolygonXY(void)
+{
+  pg_ClearPolygonXY(&u8g2_pg);
+}
+
+void u8g2_AddPolygonXY(U8X8_UNUSED u8g2_t *u8g2, int16_t x, int16_t y)
+{
+  pg_AddPolygonXY(&u8g2_pg, x, y);
+}
+
+void u8g2_DrawPolygon(u8g2_t *u8g2)
+{
+  pg_DrawPolygon(&u8g2_pg, u8g2);
+}
+
+void u8g2_DrawTriangle(u8g2_t *u8g2, int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2)
+{
+  u8g2_ClearPolygonXY();
+  u8g2_AddPolygonXY(u8g2, x0, y0);
+  u8g2_AddPolygonXY(u8g2, x1, y1);
+  u8g2_AddPolygonXY(u8g2, x2, y2);
+  u8g2_DrawPolygon(u8g2);
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8g2_selection_list.c

@@ -0,0 +1,284 @@
+/*
+
+  u8g2_selection_list.c
+  
+  selection list with scroll option
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include "u8g2.h"
+
+#define MY_BORDER_SIZE 1
+
+
+/*
+  Draw a string at x,y
+  Center string within w (left adjust if w < pixel len of s)
+  
+  Side effects:
+    u8g2_SetFontDirection(u8g2, 0);
+    u8g2_SetFontPosBaseline(u8g2);
+
+*/
+void u8g2_DrawUTF8Line(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, const char *s, uint8_t border_size, uint8_t is_invert)
+{
+  u8g2_uint_t d, str_width;
+  u8g2_uint_t fx, fy, fw, fh;
+
+  /* only horizontal strings are supported, so force this here */
+  u8g2_SetFontDirection(u8g2, 0);
+
+  /* revert y position back to baseline ref */
+  y += u8g2->font_calc_vref(u8g2);   
+
+  /* calculate the width of the string in pixel */
+  str_width = u8g2_GetUTF8Width(u8g2, s);
+
+  /* calculate delta d within the box */
+  d = 0;
+  if ( str_width < w )
+  {
+    d = w;
+    d -=str_width;
+    d /= 2;
+  }
+  else
+  {
+    w = str_width;
+  }
+
+  /* caluclate text box */
+  fx = x;
+  fy = y - u8g2_GetAscent(u8g2) ;
+  fw = w;
+  fh = u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2) ;
+
+  /* draw the box, if inverted */
+  u8g2_SetDrawColor(u8g2, 1);
+  if ( is_invert )
+  {
+    u8g2_DrawBox(u8g2, fx, fy, fw, fh);
+  }
+
+  /* draw the frame */
+  while( border_size > 0 )
+  {
+    fx--;
+    fy--;
+    fw +=2;
+    fh +=2;
+    u8g2_DrawFrame(u8g2, fx, fy, fw, fh );
+    border_size--;
+  }
+
+  if ( is_invert )
+  {
+    u8g2_SetDrawColor(u8g2, 0);
+  }
+  else
+  {
+    u8g2_SetDrawColor(u8g2, 1);
+  }
+
+  /* draw the text */
+  u8g2_DrawUTF8(u8g2, x+d, y, s);
+
+  /* revert draw color */
+  u8g2_SetDrawColor(u8g2, 1);
+
+}
+
+
+/*
+  draw several lines at position x,y.
+  lines are stored in s and must be separated with '\n'.
+  lines can be centered with respect to "w"
+  if s == NULL nothing is drawn and 0 is returned
+  returns the number of lines in s multiplied with line_height
+*/
+u8g2_uint_t u8g2_DrawUTF8Lines(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t line_height, const char *s)
+{
+  uint8_t i;
+  uint8_t cnt;
+  u8g2_uint_t yy = 0;
+  cnt = u8x8_GetStringLineCnt(s);
+  //printf("str=%s\n", s);
+  //printf("cnt=%d, y=%d, line_height=%d\n", cnt, y, line_height);
+  for( i = 0; i < cnt; i++ )
+  {
+    //printf("  i=%d, y=%d, line_height=%d\n", i, y, line_height);
+    u8g2_DrawUTF8Line(u8g2, x, y, w, u8x8_GetStringLineStart(i, s), 0, 0);
+    y+=line_height;
+    yy+=line_height;
+  }
+  return yy;
+}
+
+/*
+  selection list with string line
+  returns line height
+*/
+static u8g2_uint_t u8g2_draw_selection_list_line(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, uint8_t idx, const char *s) U8G2_NOINLINE;
+static u8g2_uint_t u8g2_draw_selection_list_line(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, uint8_t idx, const char *s)
+{
+  u8g2_uint_t yy;
+  uint8_t border_size = 0;
+  uint8_t is_invert = 0;
+	
+  u8g2_uint_t line_height = u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2)+MY_BORDER_SIZE;
+
+  /* calculate offset from display upper border */
+  yy = idx;
+  yy -= u8sl->first_pos;
+  yy *= line_height;
+  yy += y;
+
+  /* check whether this is the current cursor line */
+  if ( idx == u8sl->current_pos )
+  {
+    border_size = MY_BORDER_SIZE;
+    is_invert = 1;
+  }
+
+  /* get the line from the array */
+  s = u8x8_GetStringLineStart(idx, s);
+
+  /* draw the line */
+  if ( s == NULL )
+    s = "";
+  u8g2_DrawUTF8Line(u8g2, MY_BORDER_SIZE, y, u8g2_GetDisplayWidth(u8g2)-2*MY_BORDER_SIZE, s, border_size, is_invert);
+  return line_height;
+}
+
+void u8g2_DrawSelectionList(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, const char *s)
+{
+  uint8_t i;
+  for( i = 0; i < u8sl->visible; i++ )
+  {
+    y += u8g2_draw_selection_list_line(u8g2, u8sl, y, i+u8sl->first_pos, s);
+  }
+}
+
+
+/*
+  title: 		NULL for no title, valid str for title line. Can contain mutliple lines, separated by '\n'
+  start_pos: 	default position for the cursor, first line is 1.
+  sl:			string list (list of strings separated by \n)
+  returns 0 if user has pressed the home key
+  returns the selected line if user has pressed the select key
+  side effects:
+    u8g2_SetFontDirection(u8g2, 0);
+    u8g2_SetFontPosBaseline(u8g2);
+	
+*/
+uint8_t u8g2_UserInterfaceSelectionList(u8g2_t *u8g2, const char *title, uint8_t start_pos, const char *sl)
+{
+  u8sl_t u8sl;
+  u8g2_uint_t yy;
+
+  uint8_t event;
+
+  u8g2_uint_t line_height = u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2)+MY_BORDER_SIZE;
+
+  uint8_t title_lines = u8x8_GetStringLineCnt(title);
+  uint8_t display_lines;
+
+  
+  if ( start_pos > 0 )	/* issue 112 */
+    start_pos--;		/* issue 112 */
+
+
+  if ( title_lines > 0 )
+  {
+	display_lines = (u8g2_GetDisplayHeight(u8g2)-3) / line_height;
+	u8sl.visible = display_lines;
+	u8sl.visible -= title_lines;
+  }
+  else
+  {
+	display_lines = u8g2_GetDisplayHeight(u8g2) / line_height;
+	u8sl.visible = display_lines;
+  }
+
+  u8sl.total = u8x8_GetStringLineCnt(sl);
+  u8sl.first_pos = 0;
+  u8sl.current_pos = start_pos;
+
+  if ( u8sl.current_pos >= u8sl.total )
+    u8sl.current_pos = u8sl.total-1;
+  if ( u8sl.first_pos+u8sl.visible <= u8sl.current_pos )
+    u8sl.first_pos = u8sl.current_pos-u8sl.visible+1;
+
+  u8g2_SetFontPosBaseline(u8g2);
+  
+  for(;;)
+  {
+      u8g2_FirstPage(u8g2);
+      do
+      {
+        yy = u8g2_GetAscent(u8g2);
+        if ( title_lines > 0 )
+        {
+          yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title);
+		
+	  u8g2_DrawHLine(u8g2, 0, yy-line_height- u8g2_GetDescent(u8g2) + 1, u8g2_GetDisplayWidth(u8g2));
+		
+	  yy += 3;
+        }
+        u8g2_DrawSelectionList(u8g2, &u8sl, yy, sl);
+      } while( u8g2_NextPage(u8g2) );
+      
+#ifdef U8G2_REF_MAN_PIC
+      return 0;
+#endif
+
+
+      for(;;)
+      {
+        event = u8x8_GetMenuEvent(u8g2_GetU8x8(u8g2));
+        if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+          return u8sl.current_pos+1;		/* +1, issue 112 */
+        else if ( event == U8X8_MSG_GPIO_MENU_HOME )
+          return 0;				/* issue 112: return 0 instead of start_pos */
+        else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_DOWN )
+        {
+          u8sl_Next(&u8sl);
+          break;
+        }
+        else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_UP )
+        {
+          u8sl_Prev(&u8sl);
+          break;
+        }
+      }
+  }
+}

lib/U8g2_ID942-tweaked/src/clib/u8g2_setup.c

@@ -0,0 +1,305 @@
+/*
+
+  u8g2_setup.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+#include <string.h>
+
+/*============================================*/
+/*
+  This procedure is called after setting up the display (u8x8 structure).
+  --> This is the central init procedure for u8g2 object
+*/
+void u8g2_SetupBuffer(u8g2_t *u8g2, uint8_t *buf, uint8_t tile_buf_height, u8g2_draw_ll_hvline_cb ll_hvline_cb, const u8g2_cb_t *u8g2_cb)
+{
+  u8g2->font = NULL;
+  //u8g2->kerning = NULL;
+  //u8g2->get_kerning_cb = u8g2_GetNullKerning;
+  
+  //u8g2->ll_hvline = u8g2_ll_hvline_vertical_top_lsb;
+  u8g2->ll_hvline = ll_hvline_cb;
+  
+  u8g2->tile_buf_ptr = buf;
+  u8g2->tile_buf_height = tile_buf_height;
+  
+  u8g2->tile_curr_row = 0;
+  
+  u8g2->font_decode.is_transparent = 0; /* issue 443 */
+  u8g2->bitmap_transparency = 0;
+  
+  u8g2->draw_color = 1;
+  u8g2->is_auto_page_clear = 1;
+  
+  u8g2->cb = u8g2_cb;
+  u8g2->cb->update(u8g2);
+
+  u8g2_SetFontPosBaseline(u8g2);  /* issue 195 */
+  
+#ifdef U8G2_WITH_FONT_ROTATION  
+  u8g2->font_decode.dir = 0;
+#endif
+}
+
+/*
+  Usually the display rotation is set initially, but it could be done later also
+  u8g2_cb can be U8G2_R0..U8G2_R3
+*/
+void u8g2_SetDisplayRotation(u8g2_t *u8g2, const u8g2_cb_t *u8g2_cb)
+{
+  u8g2->cb = u8g2_cb;
+  u8g2->cb->update(u8g2);
+}
+
+
+/*============================================*/
+/* 
+  update dimension: 
+  calculate the following variables:
+    u8g2_uint_t buf_x0;	left corner of the buffer
+    u8g2_uint_t buf_x1;	right corner of the buffer (excluded)
+    u8g2_uint_t buf_y0;
+    u8g2_uint_t buf_y1; 	
+*/
+
+static void u8g2_update_dimension_common(u8g2_t *u8g2)
+{
+  u8g2_uint_t t;
+  
+  t = u8g2->tile_buf_height;
+  t *= 8;
+  u8g2->pixel_buf_height = t;
+  
+  t = u8g2_GetU8x8(u8g2)->display_info->tile_width;
+#ifndef U8G2_16BIT
+  if ( t >= 32 )
+    t = 31;
+#endif
+  t *= 8;
+  u8g2->pixel_buf_width = t;
+  
+  t = u8g2->tile_curr_row;
+  t *= 8;
+  u8g2->pixel_curr_row = t;
+  
+  t = u8g2->tile_buf_height;
+  /* handle the case, where the buffer is larger than the (remaining) part of the display */
+  if ( t + u8g2->tile_curr_row > u8g2_GetU8x8(u8g2)->display_info->tile_height )
+    t = u8g2_GetU8x8(u8g2)->display_info->tile_height - u8g2->tile_curr_row;
+  t *= 8;
+  
+  u8g2->buf_y0 = u8g2->pixel_curr_row;   
+  u8g2->buf_y1 = u8g2->buf_y0;
+  u8g2->buf_y1 += t;
+
+  
+#ifdef U8G2_16BIT
+  u8g2->width = u8g2_GetU8x8(u8g2)->display_info->pixel_width;
+  u8g2->height = u8g2_GetU8x8(u8g2)->display_info->pixel_height;
+#else
+  u8g2->width = 240;
+  if ( u8g2_GetU8x8(u8g2)->display_info->pixel_width <= 240 )
+    u8g2->width = u8g2_GetU8x8(u8g2)->display_info->pixel_width;
+  u8g2->height = u8g2_GetU8x8(u8g2)->display_info->pixel_height;
+#endif
+
+}
+
+void u8g2_update_dimension_r0(u8g2_t *u8g2)
+{
+  u8g2_update_dimension_common(u8g2);
+
+  u8g2->user_x0 = 0;
+  u8g2->user_x1 = u8g2->pixel_buf_width;	/* pixel_buf_width replaced with width */
+  
+  u8g2->user_y0 = u8g2->buf_y0;
+  u8g2->user_y1 = u8g2->buf_y1;
+  
+//  printf("x0=%d x1=%d y0=%d y1=%d\n", 
+//      u8g2->user_x0, u8g2->user_x1, u8g2->user_y0, u8g2->user_y1);
+}
+
+void u8g2_update_dimension_r1(u8g2_t *u8g2)
+{
+  u8g2_update_dimension_common(u8g2);
+  
+  u8g2->height = u8g2_GetU8x8(u8g2)->display_info->pixel_width;
+  u8g2->width = u8g2_GetU8x8(u8g2)->display_info->pixel_height;
+  
+  u8g2->user_x0 = u8g2->buf_y0;
+  u8g2->user_x1 = u8g2->buf_y1;
+  
+  u8g2->user_y0 = 0;
+  u8g2->user_y1 = u8g2->height;	/* pixel_buf_width replaced with height (which is the real pixel width) */
+  
+  //printf("x0=%d x1=%d y0=%d y1=%d\n", 
+   //   u8g2->user_x0, u8g2->user_x1, u8g2->user_y0, u8g2->user_y1);
+}
+
+void u8g2_update_dimension_r2(u8g2_t *u8g2)
+{
+  u8g2_update_dimension_common(u8g2);
+
+  u8g2->user_x0 = 0;
+  u8g2->user_x1 = u8g2->width;	/* pixel_buf_width replaced with width */
+  
+  /* there are ases where the height is not a multiple of 8. */
+  /* in such a case u8g2->buf_y1 might be heigher than u8g2->height */
+  u8g2->user_y0 = 0;
+  if ( u8g2->height >= u8g2->buf_y1 )
+    u8g2->user_y0 = u8g2->height - u8g2->buf_y1;
+  u8g2->user_y1 = u8g2->height - u8g2->buf_y0;
+
+//  printf("x0=%d x1=%d y0=%d y1=%d\n", 
+//      u8g2->user_x0, u8g2->user_x1, u8g2->user_y0, u8g2->user_y1);
+}
+
+void u8g2_update_dimension_r3(u8g2_t *u8g2)
+{
+  u8g2_update_dimension_common(u8g2);
+  
+  u8g2->height = u8g2_GetU8x8(u8g2)->display_info->pixel_width;
+  u8g2->width = u8g2_GetU8x8(u8g2)->display_info->pixel_height;
+
+  /* there are ases where the height is not a multiple of 8. */
+  /* in such a case u8g2->buf_y1 might be heigher than u8g2->width */
+  u8g2->user_x0 = 0;
+  if ( u8g2->width >= u8g2->buf_y1 )
+    u8g2->user_x0 = u8g2->width - u8g2->buf_y1;
+  u8g2->user_x1 = u8g2->width - u8g2->buf_y0;
+  
+  u8g2->user_y0 = 0;
+  u8g2->user_y1 = u8g2->height;	/* pixel_buf_width replaced with height (pixel_width) */
+
+//  printf("x0=%d x1=%d y0=%d y1=%d\n", 
+//      u8g2->user_x0, u8g2->user_x1, u8g2->user_y0, u8g2->user_y1);
+}
+
+/*============================================*/
+extern void u8g2_draw_hv_line_4dir(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir);
+
+
+void u8g2_draw_l90_r0(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  u8g2_draw_hv_line_4dir(u8g2, x, y, len, dir);
+}
+
+void u8g2_draw_l90_mirrorr_r0(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  u8g2_uint_t xx;
+  xx = u8g2->width;
+  xx -= x;
+  if ( (dir & 1) == 0 )
+  {
+    xx -= len;
+  }
+  else
+  {
+    xx--;
+  }
+  u8g2_draw_hv_line_4dir(u8g2, xx, y, len, dir);
+}
+
+
+
+void u8g2_draw_l90_r1(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  u8g2_uint_t xx, yy;
+  
+  yy = x;
+  
+  xx = u8g2->height;
+  xx -= y;
+  xx--;
+  
+  dir ++;
+  dir &= 3;
+  u8g2_draw_hv_line_4dir(u8g2, xx, yy, len, dir);
+}
+
+void u8g2_draw_l90_r2(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  u8g2_uint_t xx, yy;
+
+  yy = u8g2->height;
+  yy -= y;
+  yy--;
+  
+  xx = u8g2->width;
+  xx -= x;
+  xx--;
+  
+  dir +=2;
+  dir &= 3;
+  u8g2_draw_hv_line_4dir(u8g2, xx, yy, len, dir);
+}
+
+void u8g2_draw_l90_r3(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
+{
+  u8g2_uint_t xx, yy;
+
+  xx = y;
+  
+  yy = u8g2->width;
+  yy -= x;
+  yy--;
+  
+  dir +=3;
+  dir &= 3;
+  u8g2_draw_hv_line_4dir(u8g2, xx, yy, len, dir);
+}
+
+
+
+/*============================================*/
+const u8g2_cb_t u8g2_cb_r0 = { u8g2_update_dimension_r0, u8g2_draw_l90_r0 };
+const u8g2_cb_t u8g2_cb_r1 = { u8g2_update_dimension_r1, u8g2_draw_l90_r1 };
+const u8g2_cb_t u8g2_cb_r2 = { u8g2_update_dimension_r2, u8g2_draw_l90_r2 };
+const u8g2_cb_t u8g2_cb_r3 = { u8g2_update_dimension_r3, u8g2_draw_l90_r3 };
+  
+const u8g2_cb_t u8g2_cb_mirror = { u8g2_update_dimension_r0, u8g2_draw_l90_mirrorr_r0 };
+  
+/*============================================*/
+/* setup for the null device */
+
+/* setup for the null (empty) device */
+void u8g2_Setup_null(u8g2_t *u8g2, const u8g2_cb_t *rotation, u8x8_msg_cb byte_cb, u8x8_msg_cb gpio_and_delay_cb)
+{
+  static uint8_t buf[8];
+  u8g2_SetupDisplay(u8g2, u8x8_d_null_cb, u8x8_cad_empty, byte_cb, gpio_and_delay_cb);
+  u8g2_SetupBuffer(u8g2, buf, 1, u8g2_ll_hvline_vertical_top_lsb, rotation);
+}
+
+
+  
+  

lib/U8g2_ID942-tweaked/src/clib/u8log.c

@@ -0,0 +1,260 @@
+/*
+
+  u8log.c
+  
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2018, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include <stdint.h>
+#include <string.h>
+#include "u8x8.h"
+
+
+/*
+static uint8_t u8log_is_on_screen(u8log_t *u8log, uint8_t x, uint8_t y)
+{
+  if ( x >= u8log->width )
+    return 0;
+  if ( y >= u8log->height )
+    return 0;
+  return 1;
+}
+*/
+
+static void u8log_clear_screen(u8log_t *u8log)
+{
+  uint8_t *dest = u8log->screen_buffer;
+  uint16_t cnt = u8log->height;
+  cnt *= u8log->width;
+  do
+  {
+    *dest++ = ' ';
+    cnt--;
+  } while( cnt > 0 );
+  
+}
+
+
+/* scroll the content of the complete buffer, set redraw_line to 255 */
+static void u8log_scroll_up(u8log_t *u8log)
+{
+  uint8_t *dest = u8log->screen_buffer;
+  uint8_t *src = dest+u8log->width;
+  uint16_t cnt = u8log->height;
+  cnt--;
+  cnt *= u8log->width;
+  do
+  {
+    *dest++ = *src++;
+    cnt--;
+  } while( cnt > 0 );
+  cnt = u8log->width;
+  do
+  {
+    *dest++ = ' ';
+    cnt--;
+  } while(cnt > 0);
+  
+  if ( u8log->is_redraw_line_for_each_char )
+    u8log->is_redraw_all = 1;
+  else
+    u8log->is_redraw_all_required_for_next_nl = 1;
+}
+
+/*
+  Place the cursor on the screen. This will also scroll, if required 
+*/
+static void u8log_cursor_on_screen(u8log_t *u8log)
+{
+  //printf("u8log_cursor_on_screen, cursor_y=%d\n", u8log->cursor_y);
+  if ( u8log->cursor_x >= u8log->width )
+  {
+    u8log->cursor_x = 0;
+    u8log->cursor_y++;
+  }
+  while ( u8log->cursor_y >= u8log->height )
+  {
+    u8log_scroll_up(u8log);
+    u8log->cursor_y--;
+  }
+}
+
+/*
+  Write a printable, single char on the screen, do any kind of scrolling
+*/
+static void u8log_write_to_screen(u8log_t *u8log, uint8_t c)
+{
+  u8log_cursor_on_screen(u8log);
+  u8log->screen_buffer[u8log->cursor_y * u8log->width + u8log->cursor_x] = c;
+  u8log->cursor_x++;
+  
+  if ( u8log->is_redraw_line_for_each_char )
+  {
+    u8log->is_redraw_line = 1;
+    u8log->redraw_line = u8log->cursor_y;
+  }
+}
+
+/*
+  Handle control codes or write the char to the screen.
+  Supported control codes are:
+  
+    \n		10		Goto first position of the next line. Line is marked for redraw.
+    \r		13		Goto first position in the same line. Line is marked for redraw.
+    \t		9		Jump to the next tab position
+    \f		12		Clear the screen and mark redraw for whole screen
+    any other char	Write char to screen. Line redraw mark depends on 
+				is_redraw_line_for_each_char flag.
+*/
+void u8log_write_char(u8log_t *u8log, uint8_t c)
+{
+  switch(c)
+  {
+    case '\n':	// 10
+      u8log->is_redraw_line = 1;
+      u8log->redraw_line = u8log->cursor_y;
+      if ( u8log->is_redraw_all_required_for_next_nl )
+	u8log->is_redraw_all = 1;
+      u8log->is_redraw_all_required_for_next_nl = 0;
+      u8log->cursor_y++;
+      u8log->cursor_x = 0;
+      break;	
+    case '\r':	// 13
+      u8log->is_redraw_line = 1;
+      u8log->redraw_line = u8log->cursor_y;
+      u8log->cursor_x = 0;
+      break;
+    case '\t':	// 9
+      u8log->cursor_x = (u8log->cursor_x + 8) & 0xf8;
+      break;
+    case '\f':	// 12
+      u8log_clear_screen(u8log);
+      u8log->is_redraw_all = 1;
+      u8log->cursor_x = 0;
+      u8log->cursor_y = 0;
+      break;
+    default:
+      u8log_write_to_screen(u8log, c);
+      break;
+  }
+}
+
+void u8log_Init(u8log_t *u8log, uint8_t width, uint8_t height, uint8_t *buf)
+{
+  memset(u8log, 0, sizeof(u8log_t));
+  u8log->width = width;
+  u8log->height = height;
+  u8log->screen_buffer = buf;
+  u8log_clear_screen(u8log);
+}
+
+void u8log_SetCallback(u8log_t *u8log, u8log_cb cb, void *aux_data)
+{
+  u8log->cb = cb;
+  u8log->aux_data = aux_data;
+}
+
+void u8log_SetRedrawMode(u8log_t *u8log, uint8_t is_redraw_line_for_each_char)
+{
+  u8log->is_redraw_line_for_each_char = is_redraw_line_for_each_char;
+}
+
+/* offset can be negative or positive, it is 0 by default */
+void u8log_SetLineHeightOffset(u8log_t *u8log, int8_t line_height_offset)
+{
+  u8log->line_height_offset = line_height_offset;
+}
+
+
+
+void u8log_WriteChar(u8log_t *u8log, uint8_t c)
+{
+  u8log_write_char(u8log, c);
+  if ( u8log->is_redraw_line || u8log->is_redraw_all )
+  {
+    if ( u8log->cb != 0 )
+    {
+      u8log->cb(u8log);
+    }
+    u8log->is_redraw_line = 0;
+    u8log->is_redraw_all = 0;
+  }
+}
+
+void u8log_WriteString(u8log_t *u8log, const char *s)
+{
+  while( *s != '\0' )
+  {
+    u8log_WriteChar(u8log, *s);
+    s++;
+  }
+}
+
+static void u8log_WriteHexHalfByte(u8log_t *u8log, uint8_t b) U8X8_NOINLINE;
+static void u8log_WriteHexHalfByte(u8log_t *u8log, uint8_t b)
+{
+  b &= 0x0f;
+  if ( b < 10 )
+    u8log_WriteChar(u8log, b+'0');
+  else
+    u8log_WriteChar(u8log, b+'a'-10);
+}
+
+void u8log_WriteHex8(u8log_t *u8log, uint8_t b)
+{
+  u8log_WriteHexHalfByte(u8log, b >> 4);
+  u8log_WriteHexHalfByte(u8log, b);
+}
+
+void u8log_WriteHex16(u8log_t *u8log, uint16_t v)
+{
+  u8log_WriteHex8(u8log, v>>8);
+  u8log_WriteHex8(u8log, v);
+}
+
+void u8log_WriteHex32(u8log_t *u8log, uint32_t v)
+{
+  u8log_WriteHex16(u8log, v>>16);
+  u8log_WriteHex16(u8log, v);
+}
+
+/* v = value, d = number of digits (1..3) */
+void u8log_WriteDec8(u8log_t *u8log, uint8_t v, uint8_t d)
+{
+  u8log_WriteString(u8log, u8x8_u8toa(v, d));
+}
+
+/* v = value, d = number of digits (1..5) */
+void u8log_WriteDec16(u8log_t *u8log, uint16_t v, uint8_t d)
+{
+  u8log_WriteString(u8log, u8x8_u16toa(v, d));
+}

lib/U8g2_ID942-tweaked/src/clib/u8log_u8g2.c

@@ -0,0 +1,98 @@
+/*
+
+  u8log_u8g2.c
+  
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2018, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+/*
+  Draw the u8log text at the specified x/y position.
+  x/y position is the reference position of the first char of the first line.
+  the line height is 
+    u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2) + line_height_offset;
+  line_height_offset can be set with u8log_SetLineHeightOffset()
+  Use
+    u8g2_SetFontRefHeightText(u8g2_t *u8g2);
+    u8g2_SetFontRefHeightExtendedText(u8g2_t *u8g2);
+    u8g2_SetFontRefHeightAll(u8g2_t *u8g2);
+  to change the return values for u8g2_GetAscent and u8g2_GetDescent
+
+*/
+void u8g2_DrawLog(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8log_t *u8log)
+{
+  u8g2_uint_t disp_x, disp_y;
+  uint8_t buf_x, buf_y;
+  uint8_t c;
+  
+  disp_y = y;  
+  u8g2_SetFontDirection(u8g2, 0);
+  for( buf_y = 0; buf_y < u8log->height; buf_y++ )
+  {
+    disp_x = x;
+    for( buf_x = 0; buf_x < u8log->width; buf_x++ )
+    {
+      c = u8log->screen_buffer[buf_y * u8log->width + buf_x];
+      disp_x += u8g2_DrawGlyph(u8g2, disp_x, disp_y, c);
+    }
+    disp_y += u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2);
+    disp_y += u8log->line_height_offset;
+  }
+}
+
+/*
+  u8lib callback for u8g2
+  
+  Only font direction 0 is supported: u8g2_SetFontDirection(u8g2, 0)
+  Use
+    u8g2_SetFontRefHeightText(u8g2_t *u8g2);
+    u8g2_SetFontRefHeightExtendedText(u8g2_t *u8g2);
+    u8g2_SetFontRefHeightAll(u8g2_t *u8g2);
+  to change the top offset and the line height and
+    u8log_SetLineHeightOffset(u8log_t *u8log, int8_t line_height_offset)
+  to change the line height.
+  
+*/
+void u8log_u8g2_cb(u8log_t * u8log)
+{
+  u8g2_t *u8g2 = (u8g2_t *)(u8log->aux_data);
+  if ( u8log->is_redraw_line || u8log->is_redraw_all )
+  {
+    u8g2_FirstPage(u8g2);
+    do
+    {
+      u8g2_DrawLog( u8g2, 0, u8g2_GetAscent(u8g2), u8log);
+    }
+    while( u8g2_NextPage(u8g2) );
+  }
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8log_u8x8.c

@@ -0,0 +1,75 @@
+/*
+
+  u8log_u8x8.c
+  
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2018, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8x8.h"
+
+static void u8x8_DrawLogLine(u8x8_t *u8x8, uint8_t disp_x, uint8_t disp_y, uint8_t buf_y, u8log_t *u8log) U8X8_NOINLINE;
+static void u8x8_DrawLogLine(u8x8_t *u8x8, uint8_t disp_x, uint8_t disp_y, uint8_t buf_y, u8log_t *u8log)
+{
+  uint8_t buf_x;
+  uint8_t c;
+  for( buf_x = 0; buf_x < u8log->width; buf_x++ )
+  {
+    c = u8log->screen_buffer[buf_y * u8log->width + buf_x];
+    u8x8_DrawGlyph(u8x8, disp_x, disp_y, c);
+    disp_x++;
+  }
+}
+
+void u8x8_DrawLog(u8x8_t *u8x8, uint8_t x, uint8_t y, u8log_t *u8log)
+{
+  uint8_t buf_y;
+  for( buf_y = 0; buf_y < u8log->height; buf_y++ )
+  {
+    u8x8_DrawLogLine(u8x8, x, y, buf_y, u8log);
+    y++;
+  }
+}
+
+
+void u8log_u8x8_cb(u8log_t * u8log)
+{
+  u8x8_t *u8x8 = (u8x8_t *)(u8log->aux_data);
+  if ( u8log->is_redraw_all )
+  {
+    u8x8_DrawLog(u8x8, 0, 0, u8log);
+  }
+  else if ( u8log->is_redraw_line )
+  {
+    u8x8_DrawLogLine(u8x8, 0, u8log->redraw_line, u8log->redraw_line, u8log);
+  }
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_8x8.c

@@ -0,0 +1,420 @@
+/*
+
+  u8x8_8x8.c
+  
+  font procedures, directly interfaces display procedures
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.    
+
+*/
+
+#include "u8x8.h"
+
+#if defined(ESP8266)
+uint8_t u8x8_pgm_read_esp(const uint8_t * addr) 
+{
+    uint32_t bytes;
+    bytes = *(uint32_t*)((uint32_t)addr & ~3);
+    return ((uint8_t*)&bytes)[(uint32_t)addr & 3];
+}
+#endif
+
+
+void u8x8_SetFont(u8x8_t *u8x8, const uint8_t *font_8x8)
+{
+  u8x8->font = font_8x8;
+}
+
+/*
+ Args:
+   u8x8: ptr to u8x8 structure
+   encoding: glyph for which the data is requested (must be between 0 and 255)
+   buf: pointer to 8 bytes
+*/
+static void u8x8_get_glyph_data(u8x8_t *u8x8, uint8_t encoding, uint8_t *buf) U8X8_NOINLINE;
+static void u8x8_get_glyph_data(u8x8_t *u8x8, uint8_t encoding, uint8_t *buf) 
+{
+  uint8_t first, last, i;
+  uint16_t offset;
+  first = u8x8_pgm_read(u8x8->font+0);
+  last = u8x8_pgm_read(u8x8->font+1);
+  
+  /* get the glyph bitmap from the font */
+  if ( first <= encoding && encoding <= last )
+  {
+    offset = encoding;
+    offset -= first;
+    offset *= 8;
+    offset +=2;
+    for( i = 0; i < 8; i++ )
+    {
+      buf[i] = u8x8_pgm_read(u8x8->font+offset);
+      offset++;
+    }
+  }
+  else
+  {
+    for( i = 0; i < 8; i++ )
+    {
+      buf[i] = 0;
+    }
+  }
+  
+  /* invert the bitmap if required */
+  if ( u8x8->is_font_inverse_mode )
+  {
+    for( i = 0; i < 8; i++ )
+    {
+      buf[i] ^= 255;
+    }
+  }
+  
+}
+
+void u8x8_DrawGlyph(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t encoding)
+{
+  uint8_t buf[8];
+  u8x8_get_glyph_data(u8x8, encoding, buf);
+  u8x8_DrawTile(u8x8, x, y, 1, buf);
+}
+
+
+/*
+  Source: http://graphics.stanford.edu/~seander/bithacks.html
+	Section: Interleave bits by Binary Magic Numbers 
+   Original codes is here:
+		static const unsigned int B[] = {0x55555555, 0x33333333, 0x0F0F0F0F, 0x00FF00FF};
+		static const unsigned int S[] = {1, 2, 4, 8};
+
+		unsigned int x; // Interleave lower 16 bits of x and y, so the bits of x
+		unsigned int y; // are in the even positions and bits from y in the odd;
+		unsigned int z; // z gets the resulting 32-bit Morton Number.  
+				// x and y must initially be less than 65536.
+
+		x = (x | (x << S[3])) & B[3];
+		x = (x | (x << S[2])) & B[2];
+		x = (x | (x << S[1])) & B[1];
+		x = (x | (x << S[0])) & B[0];
+
+		y = (y | (y << S[3])) & B[3];
+		y = (y | (y << S[2])) & B[2];
+		y = (y | (y << S[1])) & B[1];
+		y = (y | (y << S[0])) & B[0];
+
+		z = x | (y << 1);
+*/
+uint16_t u8x8_upscale_byte(uint8_t x) 
+{
+	uint16_t y = x;
+	y |= (y << 4);		// x = (x | (x << S[2])) & B[2];
+	y &= 0x0f0f;
+	y |= (y << 2);		// x = (x | (x << S[1])) & B[1];
+	y &= 0x3333;
+	y |= (y << 1);		// x = (x | (x << S[0])) & B[0];
+	y &= 0x5555;
+  
+	y |= (y << 1);		// z = x | (y << 1);
+	return y;
+}
+
+static void u8x8_upscale_buf(uint8_t *src, uint8_t *dest) U8X8_NOINLINE;
+static void u8x8_upscale_buf(uint8_t *src, uint8_t *dest)
+{
+  uint8_t i = 4;  
+  do 
+  {
+    *dest++ = *src;
+    *dest++ = *src++;
+    i--;
+  } while( i > 0 );
+}
+
+void u8x8_Draw2x2Glyph(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t encoding)
+{
+  uint8_t i;
+  uint16_t t;
+  uint8_t buf[8];
+  uint8_t buf1[8];
+  uint8_t buf2[8];
+  u8x8_get_glyph_data(u8x8, encoding, buf);
+  for( i = 0; i < 8; i ++ )
+  {
+      t = u8x8_upscale_byte(buf[i]);
+      buf1[i] = t >> 8;
+      buf2[i] = t & 255;
+  }
+  u8x8_upscale_buf(buf2, buf);
+  u8x8_DrawTile(u8x8, x, y, 1, buf);
+  
+  u8x8_upscale_buf(buf2+4, buf);
+  u8x8_DrawTile(u8x8, x+1, y, 1, buf);
+  
+  u8x8_upscale_buf(buf1, buf);
+  u8x8_DrawTile(u8x8, x, y+1, 1, buf);
+  
+  u8x8_upscale_buf(buf1+4, buf);
+  u8x8_DrawTile(u8x8, x+1, y+1, 1, buf);  
+}
+
+/* https://github.com/olikraus/u8g2/issues/474 */
+void u8x8_Draw1x2Glyph(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t encoding)
+{
+  uint8_t i;
+  uint16_t t;
+  uint8_t buf[8];
+  uint8_t buf1[8];
+  uint8_t buf2[8];
+  u8x8_get_glyph_data(u8x8, encoding, buf);
+  for( i = 0; i < 8; i ++ )
+  {
+      t = u8x8_upscale_byte(buf[i]);
+      buf1[i] = t >> 8;
+      buf2[i] = t & 255;
+  }
+  u8x8_DrawTile(u8x8, x,   y, 1, buf2);
+  u8x8_DrawTile(u8x8, x, y+1, 1, buf1);
+}
+
+/*
+source: https://en.wikipedia.org/wiki/UTF-8
+Bits	from 		to			bytes	Byte 1 		Byte 2 		Byte 3 		Byte 4 		Byte 5 		Byte 6
+  7 	U+0000 		U+007F 		1 		0xxxxxxx
+11 	U+0080 		U+07FF 		2 		110xxxxx 	10xxxxxx
+16 	U+0800 		U+FFFF 		3 		1110xxxx 	10xxxxxx 	10xxxxxx
+21 	U+10000 	U+1FFFFF 	4 		11110xxx 	10xxxxxx 	10xxxxxx 	10xxxxxx
+26 	U+200000 	U+3FFFFFF 	5 		111110xx 	10xxxxxx 	10xxxxxx 	10xxxxxx 	10xxxxxx
+31 	U+4000000 	U+7FFFFFFF 	6 		1111110x 	10xxxxxx 	10xxxxxx 	10xxxxxx 	10xxxxxx 	10xxxxxx  
+
+
+*/
+
+/* reset the internal state machine */
+void u8x8_utf8_init(u8x8_t *u8x8)
+{
+  u8x8->utf8_state = 0;	/* also reset during u8x8_SetupDefaults() */
+}
+
+uint16_t u8x8_ascii_next(U8X8_UNUSED u8x8_t *u8x8, uint8_t b)
+{
+  if ( b == 0 || b == '\n' ) /* '\n' terminates the string to support the string list procedures */
+    return 0x0ffff;	/* end of string detected*/
+  return b;
+}
+
+/*
+  pass a byte from an utf8 encoded string to the utf8 decoder state machine
+  returns 
+    0x0fffe: no glyph, just continue
+    0x0ffff: end of string
+    anything else: The decoded encoding
+*/
+uint16_t u8x8_utf8_next(u8x8_t *u8x8, uint8_t b)
+{
+  if ( b == 0 || b == '\n' )	/* '\n' terminates the string to support the string list procedures */
+    return 0x0ffff;	/* end of string detected, pending UTF8 is discarded */
+  if ( u8x8->utf8_state == 0 )
+  {
+    if ( b >= 0xfc )	/* 6 byte sequence */
+    {
+      u8x8->utf8_state = 5;
+      b &= 1;
+    }
+    else if ( b >= 0xf8 )
+    {
+      u8x8->utf8_state = 4;
+      b &= 3;
+    }
+    else if ( b >= 0xf0 )
+    {
+      u8x8->utf8_state = 3;
+      b &= 7;      
+    }
+    else if ( b >= 0xe0 )
+    {
+      u8x8->utf8_state = 2;
+      b &= 15;
+    }
+    else if ( b >= 0xc0 )
+    {
+      u8x8->utf8_state = 1;
+      b &= 0x01f;
+    }
+    else
+    {
+      /* do nothing, just use the value as encoding */
+      return b;
+    }
+    u8x8->encoding = b;
+    return 0x0fffe;
+  }
+  else
+  {
+    u8x8->utf8_state--;
+    /* The case b < 0x080 (an illegal UTF8 encoding) is not checked here. */
+    u8x8->encoding<<=6;
+    b &= 0x03f;
+    u8x8->encoding |= b;
+    if ( u8x8->utf8_state != 0 )
+      return 0x0fffe;	/* nothing to do yet */
+  }
+  return u8x8->encoding;
+}
+
+
+
+static uint8_t u8x8_draw_string(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s) U8X8_NOINLINE;
+static uint8_t u8x8_draw_string(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  uint16_t e;
+  uint8_t cnt = 0;
+  u8x8_utf8_init(u8x8);
+  for(;;)
+  {
+    e = u8x8->next_cb(u8x8, (uint8_t)*s);
+    if ( e == 0x0ffff )
+      break;
+    s++;
+    if ( e != 0x0fffe )
+    {
+      u8x8_DrawGlyph(u8x8, x, y, e);
+      x++;
+      cnt++;
+    }
+  }
+  return cnt;
+}
+
+
+uint8_t u8x8_DrawString(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  u8x8->next_cb = u8x8_ascii_next;
+  return u8x8_draw_string(u8x8, x, y, s);
+}
+
+uint8_t u8x8_DrawUTF8(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  u8x8->next_cb = u8x8_utf8_next;
+  return u8x8_draw_string(u8x8, x, y, s);
+}
+
+
+
+static uint8_t u8x8_draw_2x2_string(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s) U8X8_NOINLINE;
+static uint8_t u8x8_draw_2x2_string(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  uint16_t e;
+  uint8_t cnt = 0;
+  u8x8_utf8_init(u8x8);
+  for(;;)
+  {
+    e = u8x8->next_cb(u8x8, (uint8_t)*s);
+    if ( e == 0x0ffff )
+      break;
+    s++;
+    if ( e != 0x0fffe )
+    {
+      u8x8_Draw2x2Glyph(u8x8, x, y, e);
+      x+=2;
+      cnt++;
+    }
+  }
+  return cnt;
+}
+
+
+uint8_t u8x8_Draw2x2String(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  u8x8->next_cb = u8x8_ascii_next;
+  return u8x8_draw_2x2_string(u8x8, x, y, s);
+}
+
+uint8_t u8x8_Draw2x2UTF8(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  u8x8->next_cb = u8x8_utf8_next;
+  return u8x8_draw_2x2_string(u8x8, x, y, s);
+}
+
+
+
+static uint8_t u8x8_draw_1x2_string(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s) U8X8_NOINLINE;
+static uint8_t u8x8_draw_1x2_string(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  uint16_t e;
+  uint8_t cnt = 0;
+  u8x8_utf8_init(u8x8);
+  for(;;)
+  {
+    e = u8x8->next_cb(u8x8, (uint8_t)*s);
+    if ( e == 0x0ffff )
+      break;
+    s++;
+    if ( e != 0x0fffe )
+    {
+      u8x8_Draw1x2Glyph(u8x8, x, y, e);
+      x++;
+      cnt++;
+    }
+  }
+  return cnt;
+}
+
+
+uint8_t u8x8_Draw1x2String(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  u8x8->next_cb = u8x8_ascii_next;
+  return u8x8_draw_1x2_string(u8x8, x, y, s);
+}
+
+uint8_t u8x8_Draw1x2UTF8(u8x8_t *u8x8, uint8_t x, uint8_t y, const char *s)
+{
+  u8x8->next_cb = u8x8_utf8_next;
+  return u8x8_draw_1x2_string(u8x8, x, y, s);
+}
+
+
+
+uint8_t u8x8_GetUTF8Len(u8x8_t *u8x8, const char *s)
+{
+  uint16_t e;
+  uint8_t cnt = 0;
+  u8x8_utf8_init(u8x8);
+  for(;;)
+  {
+    e = u8x8_utf8_next(u8x8, *s);
+    if ( e == 0x0ffff )
+      break;
+    s++;
+    if ( e != 0x0fffe )
+      cnt++;
+  }
+  return cnt;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_byte.c

@@ -0,0 +1,666 @@
+/*
+
+  u8x8_byte.c 
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+  
+*/
+
+#include "u8x8.h"
+
+uint8_t u8x8_byte_SetDC(u8x8_t *u8x8, uint8_t dc)
+{
+  return u8x8->byte_cb(u8x8, U8X8_MSG_BYTE_SET_DC, dc, NULL);
+}
+
+uint8_t u8x8_byte_SendBytes(u8x8_t *u8x8, uint8_t cnt, uint8_t *data)
+{
+  return u8x8->byte_cb(u8x8, U8X8_MSG_BYTE_SEND, cnt, (void *)data);
+}
+
+uint8_t u8x8_byte_SendByte(u8x8_t *u8x8, uint8_t byte)
+{
+  return u8x8_byte_SendBytes(u8x8, 1, &byte);
+}
+
+uint8_t u8x8_byte_StartTransfer(u8x8_t *u8x8)
+{
+  return u8x8->byte_cb(u8x8, U8X8_MSG_BYTE_START_TRANSFER, 0, NULL);
+}
+
+uint8_t u8x8_byte_EndTransfer(u8x8_t *u8x8)
+{
+  return u8x8->byte_cb(u8x8, U8X8_MSG_BYTE_END_TRANSFER, 0, NULL);
+}
+
+/*=========================================*/
+
+uint8_t u8x8_byte_empty(U8X8_UNUSED u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+    case U8X8_MSG_BYTE_INIT:
+    case U8X8_MSG_BYTE_SET_DC:
+    case U8X8_MSG_BYTE_START_TRANSFER:
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      break;	/* do nothing */
+  }
+  return 1;	/* always succeed */
+}
+
+
+/*=========================================*/
+
+
+/*
+  Uses:
+    u8x8->display_info->sda_setup_time_ns
+    u8x8->display_info->sck_pulse_width_ns
+    u8x8->display_info->spi_mode
+    u8x8->display_info->chip_disable_level
+    u8x8->display_info->chip_enable_level
+    u8x8->display_info->post_chip_enable_wait_ns
+    u8x8->display_info->pre_chip_disable_wait_ns
+  Calls to GPIO and DELAY:
+    U8X8_MSG_DELAY_NANO
+    U8X8_MSG_GPIO_DC
+    U8X8_MSG_GPIO_CS
+    U8X8_MSG_GPIO_CLOCK
+    U8X8_MSG_GPIO_DATA
+  Handles:
+    U8X8_MSG_BYTE_INIT
+    U8X8_MSG_BYTE_SEND
+    U8X8_MSG_BYTE_SET_DC
+    U8X8_MSG_BYTE_START_TRANSFER
+    U8X8_MSG_BYTE_END_TRANSFER
+*/
+
+uint8_t u8x8_byte_4wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t i, b;
+  uint8_t *data;
+  uint8_t takeover_edge = u8x8_GetSPIClockPhase(u8x8);
+  uint8_t not_takeover_edge = 1 - takeover_edge;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+      while( arg_int > 0 )
+      {
+	b = *data;
+	data++;
+	arg_int--;
+	for( i = 0; i < 8; i++ )
+	{
+	  if ( b & 128 )
+	    u8x8_gpio_SetSPIData(u8x8, 1);
+	  else
+	    u8x8_gpio_SetSPIData(u8x8, 0);
+	  b <<= 1;
+	  
+	  u8x8_gpio_SetSPIClock(u8x8, not_takeover_edge);
+	  u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->sda_setup_time_ns);
+	  u8x8_gpio_SetSPIClock(u8x8, takeover_edge);
+	  u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->sck_pulse_width_ns);
+	}    
+      }
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      /* disable chipselect */
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
+      /* no wait required here */
+      
+      /* for SPI: setup correct level of the clock signal */
+      u8x8_gpio_SetSPIClock(u8x8, u8x8_GetSPIClockPhase(u8x8));
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      u8x8_gpio_SetDC(u8x8, arg_int);
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);  
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=========================================*/
+
+uint8_t u8x8_byte_8bit_6800mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t i, b;
+  uint8_t *data;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+      while( arg_int > 0 )
+      {
+	b = *data;
+	data++;
+	arg_int--;
+	for( i = U8X8_MSG_GPIO_D0; i <= U8X8_MSG_GPIO_D7; i++ )
+	{
+	  u8x8_gpio_call(u8x8, i, b&1);
+	  b >>= 1;
+	}    
+	
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->data_setup_time_ns);
+	u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 1);
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->write_pulse_width_ns);
+	u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
+      }
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      /* disable chipselect */
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);    
+      /* ensure that the enable signal is high */
+      u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      u8x8_gpio_SetDC(u8x8, arg_int);
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);  
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+uint8_t u8x8_byte_8bit_8080mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t i, b;
+  uint8_t *data;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+      while( arg_int > 0 )
+      {
+	b = *data;
+	data++;
+	arg_int--;
+	for( i = U8X8_MSG_GPIO_D0; i <= U8X8_MSG_GPIO_D7; i++ )
+	{
+	  u8x8_gpio_call(u8x8, i, b&1);
+	  b >>= 1;
+	}    
+	
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->data_setup_time_ns);
+	u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->write_pulse_width_ns);
+	u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 1);
+      }
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      /* disable chipselect */
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);    
+      /* ensure that the enable signal is high */
+      u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 1);
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      u8x8_gpio_SetDC(u8x8, arg_int);
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);  
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=========================================*/
+
+uint8_t u8x8_byte_3wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t i;
+  uint8_t *data;
+  uint8_t takeover_edge = u8x8_GetSPIClockPhase(u8x8);
+  uint8_t not_takeover_edge = 1 - takeover_edge;
+  uint16_t b;
+  static uint8_t last_dc;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+      while( arg_int > 0 )
+      {
+	b = *data;
+	if ( last_dc != 0 )
+	  b |= 256;
+	data++;
+	arg_int--;
+	for( i = 0; i < 9; i++ )
+	{
+	  if ( b & 256 )
+	    u8x8_gpio_SetSPIData(u8x8, 1);
+	  else
+	    u8x8_gpio_SetSPIData(u8x8, 0);
+	  b <<= 1;
+	  
+	  u8x8_gpio_SetSPIClock(u8x8, not_takeover_edge);
+	  u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->sda_setup_time_ns);
+	  u8x8_gpio_SetSPIClock(u8x8, takeover_edge);
+	  u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->sck_pulse_width_ns);
+	}    
+      }
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      /* disable chipselect */
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
+      /* no wait required here */
+      
+      /* for SPI: setup correct level of the clock signal */
+      u8x8_gpio_SetSPIClock(u8x8, u8x8_GetSPIClockPhase(u8x8));
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      last_dc = arg_int;
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);  
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=========================================*/
+
+void u8x8_byte_set_ks0108_cs(u8x8_t *u8x8, uint8_t arg)
+{
+  u8x8_gpio_SetCS(u8x8, arg&1);
+  arg = arg >> 1;
+  u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_CS1, arg&1);
+  arg = arg >> 1;
+  u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_CS2, arg&1);
+}
+
+/* 6800 mode */
+uint8_t u8x8_byte_ks0108(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t i, b;
+  uint8_t *data;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+      while( arg_int > 0 )
+      {
+	b = *data;
+	data++;
+	arg_int--;
+	for( i = U8X8_MSG_GPIO_D0; i <= U8X8_MSG_GPIO_D7; i++ )
+	{
+	  u8x8_gpio_call(u8x8, i, b&1);
+	  b >>= 1;
+	}    
+	
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->data_setup_time_ns);
+	u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 1);
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->write_pulse_width_ns);
+	u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
+      }
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      /* disable chipselect */
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);    
+      /* ensure that the enable signal is low */
+      u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      u8x8_gpio_SetDC(u8x8, arg_int);
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      /* expects 3 bits in arg_int for the chip select lines */ 
+      u8x8_byte_set_ks0108_cs(u8x8, arg_int);
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
+      u8x8_byte_set_ks0108_cs(u8x8, arg_int);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/* sed1520 or sbn1661 
+  U8X8_MSG_GPIO_E --> E1
+  U8X8_MSG_GPIO_CS --> E2
+*/
+uint8_t u8x8_byte_sed1520(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t i, b;
+  uint8_t *data;
+  static uint8_t enable_pin;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+      while( arg_int > 0 )
+      {
+	b = *data;
+	data++;
+	arg_int--;
+	for( i = U8X8_MSG_GPIO_D0; i <= U8X8_MSG_GPIO_D7; i++ )
+	{
+	  u8x8_gpio_call(u8x8, i, b&1);
+	  b >>= 1;
+	}    
+	
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->data_setup_time_ns);
+	u8x8_gpio_call(u8x8, enable_pin, 1);
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 200);		/* KS0108 requires 450 ns, use 200 here */
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->write_pulse_width_ns);  /* expect 250 here */
+	u8x8_gpio_call(u8x8, enable_pin, 0);
+      }
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      /* disable chipselect */
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);    
+      /* ensure that the enable signals are low */
+      u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
+      u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_CS, 0);
+      enable_pin = U8X8_MSG_GPIO_E;
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      u8x8_gpio_SetDC(u8x8, arg_int);
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      /* cs lines are not supported for the SED1520/SBN1661 */
+      /* instead, this will select the E1 or E2 line */ 
+      enable_pin = U8X8_MSG_GPIO_E;
+      if ( arg_int != 0 )
+	enable_pin = U8X8_MSG_GPIO_CS;
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=========================================*/
+
+
+/*
+  software i2c,
+  ignores ACK response (which is anyway not provided by some displays)
+  also does not allow reading from the device
+*/
+static void i2c_delay(u8x8_t *u8x8) U8X8_NOINLINE;
+static void i2c_delay(u8x8_t *u8x8)
+{
+  //u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_10MICRO, u8x8->display_info->i2c_bus_clock_100kHz);
+  u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_I2C, u8x8->display_info->i2c_bus_clock_100kHz);
+}
+
+static void i2c_init(u8x8_t *u8x8)
+{
+  u8x8_gpio_SetI2CClock(u8x8, 1);
+  u8x8_gpio_SetI2CData(u8x8, 1);
+  
+  i2c_delay(u8x8);
+}
+
+/* actually, the scl line is not observed, so this procedure does not return a value */
+
+static void i2c_read_scl_and_delay(u8x8_t *u8x8)
+{
+  /* set as input (line will be high) */
+  u8x8_gpio_SetI2CClock(u8x8, 1);
+
+  i2c_delay(u8x8);
+}
+
+static void i2c_clear_scl(u8x8_t *u8x8)
+{
+  u8x8_gpio_SetI2CClock(u8x8, 0);
+}
+
+static void i2c_read_sda(u8x8_t *u8x8)
+{
+  /* set as input (line will be high) */
+  u8x8_gpio_SetI2CData(u8x8, 1);
+}
+
+static void i2c_clear_sda(u8x8_t *u8x8)
+{
+  /* set open collector and drive low */
+  u8x8_gpio_SetI2CData(u8x8, 0);
+}
+
+static void i2c_start(u8x8_t *u8x8)
+{
+  if ( u8x8->i2c_started != 0 )
+  {
+    /* if already started: do restart */
+    i2c_read_sda(u8x8);     /* SDA = 1 */
+    i2c_delay(u8x8);
+    i2c_read_scl_and_delay(u8x8);
+  }
+  i2c_read_sda(u8x8);
+  /* send the start condition, both lines go from 1 to 0 */
+  i2c_clear_sda(u8x8);
+  i2c_delay(u8x8);
+  i2c_clear_scl(u8x8);
+  u8x8->i2c_started = 1;
+}
+
+
+static void i2c_stop(u8x8_t *u8x8)
+{
+  /* set SDA to 0 */
+  i2c_clear_sda(u8x8);  
+  i2c_delay(u8x8);
+ 
+  /* now release all lines */
+  i2c_read_scl_and_delay(u8x8);
+ 
+  /* set SDA to 1 */
+  i2c_read_sda(u8x8);
+  i2c_delay(u8x8);
+  u8x8->i2c_started = 0;
+}
+
+static void i2c_write_bit(u8x8_t *u8x8, uint8_t val)
+{
+  if (val)
+    i2c_read_sda(u8x8);
+  else
+    i2c_clear_sda(u8x8);
+ 
+  i2c_delay(u8x8);
+  i2c_read_scl_and_delay(u8x8);
+  i2c_clear_scl(u8x8);
+}
+
+static void i2c_read_bit(u8x8_t *u8x8)
+{
+  //uint8_t val;
+  /* do not drive SDA */
+  i2c_read_sda(u8x8);
+  i2c_delay(u8x8);
+  i2c_read_scl_and_delay(u8x8);
+  i2c_read_sda(u8x8);
+  i2c_delay(u8x8);
+  i2c_clear_scl(u8x8);
+  //return val;
+}
+
+static void i2c_write_byte(u8x8_t *u8x8, uint8_t b)
+{
+  i2c_write_bit(u8x8, b & 128);
+  i2c_write_bit(u8x8, b & 64);
+  i2c_write_bit(u8x8, b & 32);
+  i2c_write_bit(u8x8, b & 16);
+  i2c_write_bit(u8x8, b & 8);
+  i2c_write_bit(u8x8, b & 4);
+  i2c_write_bit(u8x8, b & 2);
+  i2c_write_bit(u8x8, b & 1);
+    
+  /* read ack from client */
+  /* 0: ack was given by client */
+  /* 1: nothing happend during ack cycle */  
+  i2c_read_bit(u8x8);
+}
+
+uint8_t u8x8_byte_sw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t *data;
+
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+    
+      while( arg_int > 0 )
+      {
+	i2c_write_byte(u8x8, *data);
+	data++;
+	arg_int--;
+      }
+      
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      i2c_init(u8x8);
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      i2c_start(u8x8);
+      i2c_write_byte(u8x8, u8x8_GetI2CAddress(u8x8));
+      //i2c_write_byte(u8x8, 0x078);
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      i2c_stop(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=========================================*/
+
+/* alternative i2c byte procedure */
+#ifdef ALTERNATIVE_I2C_BYTE_PROCEDURE
+
+
+void i2c_transfer(u8x8_t *u8x8, uint8_t adr, uint8_t cnt, uint8_t *data)
+{
+  uint8_t i;
+  i2c_start(u8x8);
+  i2c_write_byte(u8x8, adr);
+  for( i = 0; i < cnt; i++ )
+    i2c_write_byte(u8x8, data[i]);
+  i2c_stop(u8x8);  
+}
+
+
+uint8_t u8x8_byte_sw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  static uint8_t buffer[32];		/* u8g2/u8x8 will never send more than 32 bytes */
+  static uint8_t buf_idx;
+  uint8_t *data;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;      
+      while( arg_int > 0 )
+      {
+	buffer[buf_idx++] = *data;
+	data++;
+	arg_int--;
+      }      
+      break;
+    case U8X8_MSG_BYTE_INIT:
+      i2c_init(u8x8);			/* init i2c communication */
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      /* ignored for i2c */
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      buf_idx = 0;
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      i2c_transfer(u8x8, u8x8_GetI2CAddress(u8x8), buf_idx, buffer);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+#endif

lib/U8g2_ID942-tweaked/src/clib/u8x8_cad.c

@@ -0,0 +1,643 @@
+/*
+  
+  u8x8_cad.c
+  
+  "command arg data" interface to the graphics controller
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  The following sequence must be used for any data, which is set to the display:
+  
+  
+  uint8_t u8x8_cad_StartTransfer(u8x8_t *u8x8)
+
+  any of the following calls
+    uint8_t u8x8_cad_SendCmd(u8x8_t *u8x8, uint8_t cmd)
+    uint8_t u8x8_cad_SendArg(u8x8_t *u8x8, uint8_t arg)
+    uint8_t u8x8_cad_SendData(u8x8_t *u8x8, uint8_t cnt, uint8_t *data)
+  
+  uint8_t u8x8_cad_EndTransfer(u8x8_t *u8x8)
+
+
+
+*/
+/*
+uint8_t u8x8_cad_template(u8x8_t *u8x8, uint8_t msg, uint16_t arg_int, void *arg_ptr)
+{
+  uint8_t i;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_mcd_byte_SetDC(mcd->next, 1);
+      u8x8_mcd_byte_Send(mcd->next, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_mcd_byte_SetDC(mcd->next, 1);
+      u8x8_mcd_byte_Send(mcd->next, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      u8x8_mcd_byte_SetDC(mcd->next, 0);
+      for( i = 0; i < 8; i++ )
+	u8x8_mcd_byte_Send(mcd->next, ((uint8_t *)arg_ptr)[i]);
+      break;
+    case U8X8_MSG_CAD_RESET:
+      return mcd->next->cb(mcd->next, msg, arg_int, arg_ptr);
+    case U8X8_MSG_CAD_START_TRANSFER:
+      return mcd->next->cb(mcd->next, msg, arg_int, arg_ptr);
+    case U8X8_MSG_CAD_END_TRANSFER:
+      return mcd->next->cb(mcd->next, msg, arg_int, arg_ptr);
+    default:
+      break;
+  }
+  return 1;
+}
+
+*/
+
+#include "u8x8.h"
+
+uint8_t u8x8_cad_SendCmd(u8x8_t *u8x8, uint8_t cmd)
+{
+  return u8x8->cad_cb(u8x8, U8X8_MSG_CAD_SEND_CMD, cmd, NULL);
+}
+
+uint8_t u8x8_cad_SendArg(u8x8_t *u8x8, uint8_t arg)
+{
+  return u8x8->cad_cb(u8x8, U8X8_MSG_CAD_SEND_ARG, arg, NULL);
+}
+
+uint8_t u8x8_cad_SendMultipleArg(u8x8_t *u8x8, uint8_t cnt, uint8_t arg)
+{
+  while( cnt > 0 )
+  {
+    u8x8->cad_cb(u8x8, U8X8_MSG_CAD_SEND_ARG, arg, NULL);
+    cnt--;
+  }
+  return 1;
+}
+
+uint8_t u8x8_cad_SendData(u8x8_t *u8x8, uint8_t cnt, uint8_t *data)
+{
+  return u8x8->cad_cb(u8x8, U8X8_MSG_CAD_SEND_DATA, cnt, data);
+}
+
+uint8_t u8x8_cad_StartTransfer(u8x8_t *u8x8)
+{
+  return u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 0, NULL);
+}
+
+uint8_t u8x8_cad_EndTransfer(u8x8_t *u8x8)
+{
+  return u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+}
+
+/*
+  21 c		send command c
+  22 a		send arg a
+  23 d		send data d
+  24			CS on
+  25			CS off
+  254 milli	delay by milliseconds
+  255		end of sequence
+*/
+
+void u8x8_cad_SendSequence(u8x8_t *u8x8, uint8_t const *data)
+{
+  uint8_t cmd;
+  uint8_t v;
+
+  for(;;)
+  {
+    cmd = *data;
+    data++;
+    switch( cmd )
+    {
+      case U8X8_MSG_CAD_SEND_CMD:
+      case U8X8_MSG_CAD_SEND_ARG:
+	  v = *data;
+	  u8x8->cad_cb(u8x8, cmd, v, NULL);
+	  data++;
+	  break;
+      case U8X8_MSG_CAD_SEND_DATA:
+	  v = *data;
+	  u8x8_cad_SendData(u8x8, 1, &v);
+	  data++;
+	  break;
+      case U8X8_MSG_CAD_START_TRANSFER:
+      case U8X8_MSG_CAD_END_TRANSFER:
+	  u8x8->cad_cb(u8x8, cmd, 0, NULL);
+	  break;
+      case 0x0fe:
+	  v = *data;
+	  u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, v);	    
+	  data++;
+	  break;
+      default:
+	return;
+    }
+  }
+}
+
+
+uint8_t u8x8_cad_empty(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+    case U8X8_MSG_CAD_INIT:
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/*
+  convert to bytes by using 
+    dc = 1 for commands and args and
+    dc = 0 for data
+*/
+uint8_t u8x8_cad_110(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_byte_SetDC(u8x8, 1);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_SetDC(u8x8, 1);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      u8x8_byte_SetDC(u8x8, 0);
+      //u8x8_byte_SendBytes(u8x8, arg_int, arg_ptr);
+      //break;
+      /* fall through */
+    case U8X8_MSG_CAD_INIT:
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*
+  convert to bytes by using 
+    dc = 1 for commands and args and
+    dc = 0 for data
+    t6963
+*/
+uint8_t u8x8_cad_100(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_byte_SetDC(u8x8, 1);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_SetDC(u8x8, 0);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      u8x8_byte_SetDC(u8x8, 0);
+      //u8x8_byte_SendBytes(u8x8, arg_int, arg_ptr);
+      //break;
+      /* fall through */
+    case U8X8_MSG_CAD_INIT:
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*
+  convert to bytes by using 
+    dc = 0 for commands and args and
+    dc = 1 for data
+*/
+uint8_t u8x8_cad_001(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_byte_SetDC(u8x8, 0);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_SetDC(u8x8, 0);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      u8x8_byte_SetDC(u8x8, 1);
+      //u8x8_byte_SendBytes(u8x8, arg_int, arg_ptr);
+      //break;
+      /* fall through */
+    case U8X8_MSG_CAD_INIT:
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*
+  convert to bytes by using 
+    dc = 0 for commands 
+    dc = 1 for args and data
+*/
+uint8_t u8x8_cad_011(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_byte_SetDC(u8x8, 0);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_SetDC(u8x8, 1);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      u8x8_byte_SetDC(u8x8, 1);
+      //u8x8_byte_SendBytes(u8x8, arg_int, arg_ptr);
+      //break;
+      /* fall through */
+    case U8X8_MSG_CAD_INIT:
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/* cad procedure for the ST7920 in SPI mode */
+/* u8x8_byte_SetDC is not used */
+uint8_t u8x8_cad_st7920_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t *data;
+  uint8_t b;
+  uint8_t i;
+  static uint8_t buf[16];
+  uint8_t *ptr;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_byte_SendByte(u8x8, 0x0f8);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
+      u8x8_byte_SendByte(u8x8, arg_int & 0x0f0);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
+      u8x8_byte_SendByte(u8x8, arg_int << 4);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_SendByte(u8x8, 0x0f8);
+      u8x8_byte_SendByte(u8x8, arg_int & 0x0f0);
+      u8x8_byte_SendByte(u8x8, arg_int << 4);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+    
+      u8x8_byte_SendByte(u8x8, 0x0fa);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
+
+      /* this loop should be optimized: multiple bytes should be sent */
+      /* u8x8_byte_SendBytes(u8x8, arg_int, arg_ptr); */
+      data = (uint8_t *)arg_ptr;
+    
+      /* the following loop increases speed by 20% */
+      while( arg_int >= 8 )
+      {
+	i = 8;
+	ptr = buf;
+	do
+	{
+	  b = *data++;
+	  *ptr++= b & 0x0f0;
+	  b <<= 4;
+	  *ptr++= b;
+	  i--;
+	} while( i > 0 );
+	arg_int -= 8;
+	u8x8_byte_SendBytes(u8x8, 16, buf); 
+      }
+      
+    
+      while( arg_int > 0 )
+      {
+	b = *data;
+	u8x8_byte_SendByte(u8x8, b & 0x0f0);
+	u8x8_byte_SendByte(u8x8, b << 4);
+	data++;
+	arg_int--;
+      }
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
+      break;
+    case U8X8_MSG_CAD_INIT:
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/* cad procedure for the SSD13xx family in I2C mode */
+/* this procedure is also used by the ST7588 */
+/* u8x8_byte_SetDC is not used */
+/* U8X8_MSG_BYTE_START_TRANSFER starts i2c transfer, U8X8_MSG_BYTE_END_TRANSFER stops transfer */
+/* After transfer start, a full byte indicates command or data mode */
+
+static void u8x8_i2c_data_transfer(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr) U8X8_NOINLINE;
+static void u8x8_i2c_data_transfer(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr)
+{
+    u8x8_byte_StartTransfer(u8x8);    
+    u8x8_byte_SendByte(u8x8, 0x040);
+    u8x8->byte_cb(u8x8, U8X8_MSG_CAD_SEND_DATA, arg_int, arg_ptr);
+    u8x8_byte_EndTransfer(u8x8);
+}
+
+uint8_t u8x8_cad_ssd13xx_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t *p;
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+    case U8X8_MSG_CAD_SEND_ARG:
+      /* 7 Nov 2016: Can this be improved?  */
+      //u8x8_byte_SetDC(u8x8, 0);
+      u8x8_byte_StartTransfer(u8x8);
+      //u8x8_byte_SendByte(u8x8, u8x8_GetI2CAddress(u8x8));
+      u8x8_byte_SendByte(u8x8, 0x000);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      u8x8_byte_EndTransfer(u8x8);      
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      //u8x8_byte_SetDC(u8x8, 1);
+    
+      /* the FeatherWing OLED with the 32u4 transfer of long byte */
+      /* streams was not possible. This is broken down to */
+      /* smaller streams, 32 seems to be the limit... */
+      /* I guess this is related to the size of the Wire buffers in Arduino */
+      /* Unfortunately, this can not be handled in the byte level drivers, */
+      /* so this is done here. Even further, only 24 bytes will be sent, */
+      /* because there will be another byte (DC) required during the transfer */
+      p = arg_ptr;
+       while( arg_int > 24 )
+      {
+	u8x8_i2c_data_transfer(u8x8, 24, p);
+	arg_int-=24;
+	p+=24;
+      }
+      u8x8_i2c_data_transfer(u8x8, arg_int, p);
+      break;
+    case U8X8_MSG_CAD_INIT:
+      /* apply default i2c adr if required so that the start transfer msg can use this */
+      if ( u8x8->i2c_address == 255 )
+	u8x8->i2c_address = 0x078;
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      /* cad transfer commands are ignored */
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/* the st75256 i2c driver is a copy of the ssd13xx driver, but with arg=1 */
+/* modified from cad001 (ssd13xx) to cad011 */
+uint8_t u8x8_cad_st75256_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t *p;
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      u8x8_byte_StartTransfer(u8x8);
+      u8x8_byte_SendByte(u8x8, 0x000);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      u8x8_byte_EndTransfer(u8x8);      
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_StartTransfer(u8x8);
+      u8x8_byte_SendByte(u8x8, 0x040);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      u8x8_byte_EndTransfer(u8x8);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      /* see ssd13xx driver */
+      p = arg_ptr;
+       while( arg_int > 24 )
+      {
+	u8x8_i2c_data_transfer(u8x8, 24, p);
+	arg_int-=24;
+	p+=24;
+      }
+      u8x8_i2c_data_transfer(u8x8, arg_int, p);
+      break;
+    case U8X8_MSG_CAD_INIT:
+      /* apply default i2c adr if required so that the start transfer msg can use this */
+      if ( u8x8->i2c_address == 255 )
+	u8x8->i2c_address = 0x078;	/* ST75256, often this is 0x07e */
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    case U8X8_MSG_CAD_START_TRANSFER:
+    case U8X8_MSG_CAD_END_TRANSFER:
+      /* cad transfer commands are ignored */
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/* cad i2c procedure for the ld7032 controller */
+uint8_t u8x8_cad_ld7032_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  static uint8_t in_transfer = 0;
+  uint8_t *p;
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+      if ( in_transfer != 0 )
+	u8x8_byte_EndTransfer(u8x8); 
+      u8x8_byte_StartTransfer(u8x8);
+      u8x8_byte_SendByte(u8x8, arg_int);
+      in_transfer = 1;
+      break;
+    case U8X8_MSG_CAD_SEND_ARG:
+      u8x8_byte_SendByte(u8x8, arg_int);
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      //u8x8_byte_SetDC(u8x8, 1);
+    
+      /* the FeatherWing OLED with the 32u4 transfer of long byte */
+      /* streams was not possible. This is broken down to */
+      /* smaller streams, 32 seems to be the limit... */
+      /* I guess this is related to the size of the Wire buffers in Arduino */
+      /* Unfortunately, this can not be handled in the byte level drivers, */
+      /* so this is done here. Even further, only 24 bytes will be sent, */
+      /* because there will be another byte (DC) required during the transfer */
+      p = arg_ptr;
+       while( arg_int > 24 )
+      {
+	u8x8->byte_cb(u8x8, U8X8_MSG_CAD_SEND_DATA, 24, p);
+	arg_int-=24;
+	p+=24;
+	u8x8_byte_EndTransfer(u8x8); 
+	u8x8_byte_StartTransfer(u8x8);
+	u8x8_byte_SendByte(u8x8, 0x08);	/* data write for LD7032 */
+      }
+      u8x8->byte_cb(u8x8, U8X8_MSG_CAD_SEND_DATA, arg_int, p);
+      break;
+    case U8X8_MSG_CAD_INIT:
+      /* apply default i2c adr if required so that the start transfer msg can use this */
+      if ( u8x8->i2c_address == 255 )
+	u8x8->i2c_address = 0x060;
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    case U8X8_MSG_CAD_START_TRANSFER:
+      in_transfer = 0;
+      break;
+    case U8X8_MSG_CAD_END_TRANSFER:
+      if ( in_transfer != 0 )
+	u8x8_byte_EndTransfer(u8x8); 
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/* cad procedure for the UC16xx family in I2C mode */
+/* u8x8_byte_SetDC is not used */
+/* DC bit is encoded into the adr byte */
+uint8_t u8x8_cad_uc16xx_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  static uint8_t in_transfer = 0;	
+  static uint8_t is_data = 0;
+  uint8_t *p;
+  switch(msg)
+  {
+    case U8X8_MSG_CAD_SEND_CMD:
+    case U8X8_MSG_CAD_SEND_ARG:
+      if ( in_transfer != 0 )
+      {
+	if ( is_data != 0 )
+	{
+	  /* transfer mode is active, but data transfer */
+	  u8x8_byte_EndTransfer(u8x8); 
+	  /* clear the lowest two bits of the adr */
+	  u8x8_SetI2CAddress( u8x8, u8x8_GetI2CAddress(u8x8)&0x0fc );
+	  u8x8_byte_StartTransfer(u8x8); 
+	}
+      }
+      else
+      {
+	/* clear the lowest two bits of the adr */
+	u8x8_SetI2CAddress( u8x8, u8x8_GetI2CAddress(u8x8)&0x0fc );
+	u8x8_byte_StartTransfer(u8x8);
+      }
+      u8x8_byte_SendByte(u8x8, arg_int);
+      in_transfer = 1;
+      break;
+    case U8X8_MSG_CAD_SEND_DATA:
+      if ( in_transfer != 0 )
+      {
+	if ( is_data == 0 )
+	{
+	  /* transfer mode is active, but data transfer */
+	  u8x8_byte_EndTransfer(u8x8); 
+	  /* clear the lowest two bits of the adr */
+	  u8x8_SetI2CAddress( u8x8, (u8x8_GetI2CAddress(u8x8)&0x0fc)|2 );
+	  u8x8_byte_StartTransfer(u8x8); 
+	}
+      }
+      else
+      {
+	/* clear the lowest two bits of the adr */
+	u8x8_SetI2CAddress( u8x8, (u8x8_GetI2CAddress(u8x8)&0x0fc)|2 );
+	u8x8_byte_StartTransfer(u8x8);
+      }
+      in_transfer = 1;
+      
+      p = arg_ptr;
+      while( arg_int > 24 )
+      {
+	u8x8->byte_cb(u8x8, U8X8_MSG_CAD_SEND_DATA, 24, p);
+	arg_int-=24;
+	p+=24;
+	u8x8_byte_EndTransfer(u8x8); 
+	u8x8_byte_StartTransfer(u8x8);
+      }
+      u8x8->byte_cb(u8x8, U8X8_MSG_CAD_SEND_DATA, arg_int, p);
+      
+      break;
+    case U8X8_MSG_CAD_INIT:
+      /* apply default i2c adr if required so that the start transfer msg can use this */
+      if ( u8x8->i2c_address == 255 )
+	u8x8->i2c_address = 0x070;
+      return u8x8->byte_cb(u8x8, msg, arg_int, arg_ptr);
+    case U8X8_MSG_CAD_START_TRANSFER:
+      in_transfer = 0;    
+      /* actual start is delayed, because we do not whether this is data or cmd transfer */
+      break;
+    case U8X8_MSG_CAD_END_TRANSFER:
+      if ( in_transfer != 0 )
+	u8x8_byte_EndTransfer(u8x8);
+      in_transfer = 0;
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_a2printer.c

@@ -0,0 +1,182 @@
+/*
+
+  u8x8_d_a2printer.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  Use DC2 bitmap command of the A2 Micro panel termal printer
+  double stroke
+  
+  
+*/
+
+
+#include "u8x8.h"
+
+#define LINE_MIN_DELAY_MS 15
+/* higher values improve quality */
+/* however if the value is too high (>=5) then form feed does not work any more */
+#define LINE_EXTRA_8PIXEL_DELAY_MS 3
+/* this must be a power of two and between 1 and 8 */
+/* best quality only with 1 */
+#define NO_OF_LINES_TO_SEND_WITHOUT_DELAY 1
+
+/* calculates the delay, based on the number of black pixel */
+/* actually only "none-zero" bytes are calculated which is, of course not so accurate, but should be good enough */
+uint16_t get_delay_in_milliseconds(uint8_t cnt, uint8_t *data)
+{
+  uint8_t i;
+  uint16_t time = LINE_MIN_DELAY_MS;
+  for ( i = 0; i < cnt; i++ )
+    if ( data[i] != 0 )
+      time += LINE_EXTRA_8PIXEL_DELAY_MS;
+  return time;
+}
+
+uint8_t u8x8_d_a2printer_common(u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t c, i, j;
+  uint8_t *ptr;
+  uint16_t delay_in_milliseconds;
+  switch(msg)
+  {
+    /* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
+    /*
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      // no setup required
+      // u8x8_cad_SendSequence(u8x8, u8x8_d_a2printer_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      // no powersave 
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      
+      u8x8_cad_SendCmd(u8x8, 27);      /* ESC */
+      u8x8_cad_SendCmd(u8x8, 55 );      /* parameter command */
+      /* increasing the "max printing dots" requires a good power supply, but LINE_EXTRA_8PIXEL_DELAY_MS could be reduced then */
+      u8x8_cad_SendCmd(u8x8, 0);      /* Max printing dots,Unit(8dots),Default:7(64 dots) 8*(x+1) ... lower values improve, probably my current supply is not sufficient */
+      u8x8_cad_SendCmd(u8x8, 200);      /* 3-255 Heating time,Unit(10us),Default:80(800us) */
+      u8x8_cad_SendCmd(u8x8, 2);      /* 0-255 Heating interval,Unit(10us),Default:2(20us) ... does not have much influence */
+      
+      //c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+      c = u8x8->display_info->tile_width;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;	/* data ptr to the tiles */
+    
+      u8x8_cad_SendCmd(u8x8, 18);      /* DC2 */
+      u8x8_cad_SendCmd(u8x8, 42 );      /* *  */
+      u8x8_cad_SendCmd(u8x8, 8 ); 	/* height */
+      u8x8_cad_SendCmd(u8x8, c ); 	/* c, u8x8->display_info->tile_width */
+      
+      for( j = 0; j < 8 / NO_OF_LINES_TO_SEND_WITHOUT_DELAY; j ++ )
+      {
+
+	delay_in_milliseconds = 0;
+	for( i = 0; i < NO_OF_LINES_TO_SEND_WITHOUT_DELAY; i++ )
+	{
+	  u8x8_cad_SendData(u8x8, c, ptr);	/* c, note: SendData can not handle more than 255 bytes, send one line of data */
+	  delay_in_milliseconds += get_delay_in_milliseconds(c, ptr);
+	  ptr += c;
+	}
+	
+	while( delay_in_milliseconds > 200 )
+	{
+	  u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_MILLI, 200, NULL);	
+	  delay_in_milliseconds -= 200;
+	}
+	u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_MILLI, delay_in_milliseconds, NULL);	
+      }
+
+      /* set parameters back to their default values */
+      u8x8_cad_SendCmd(u8x8, 27);      /* ESC */
+      u8x8_cad_SendCmd(u8x8, 55 );      /* parameter command */
+      u8x8_cad_SendCmd(u8x8, 7);      /* Max printing dots,Unit(8dots),Default:7(64 dots) 8*(x+1)*/
+      u8x8_cad_SendCmd(u8x8, 80);      /* 3-255 Heating time,Unit(10us),Default:80(800us) */
+      u8x8_cad_SendCmd(u8x8, 2);      /* 0-255 Heating interval,Unit(10us),Default:2(20us)*/
+
+      u8x8_cad_EndTransfer(u8x8);
+
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_a2printer_384x240_display_info =
+{
+  /* most of the settings are not required, because this is a serial RS232 printer */
+  
+  /* chip_enable_level = */ 1,
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 5,
+  /* pre_chip_disable_wait_ns = */ 5,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0) */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,
+  /* write_pulse_width_ns = */ 40,
+  /* tile_width = */ 48,
+  /* tile_hight = */ 30,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 384,
+  /* pixel_height = */ 240
+};
+
+uint8_t u8x8_d_a2printer_384x240(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_a2printer_384x240_display_info);
+      break;
+    default:
+      return u8x8_d_a2printer_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+
+  
+
+  

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_il3820_296x128.c

@@ -0,0 +1,552 @@
+/*
+
+  u8x8_d_il3820_296x128.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+  il3820: 200x300x1
+  
+  command 
+    0x22: assign actions
+    0x20: execute actions
+  
+  action for command 0x022 are (more or less guessed)
+    bit 7:	Enable Clock
+    bit 6:	Enable Charge Pump
+    bit 5:	Load Temparture Value (???)
+    bit 4:	Load LUT (???)
+    bit 3:	Initial Display (???)
+    bit 2:	Pattern Display --> Requires about 945ms with the LUT from below
+    bit 1:	Disable Charge Pump
+    bit 0:	Disable Clock
+    
+    Disable Charge Pump and Clock require about 10ms
+    Enable Charge Pump and Clock require about 100 to 300ms
+
+  Notes:
+    - Introduced a refresh display message, which copies RAM to display
+    - Charge pump is always enabled. Charge pump can be enabled/disabled via power save message
+    - U8x8 will not really work because of the two buffers in the SSD1606, however U8g2 should be ok.
+
+  LUT for the 296x128 device (IL3820)
+  LUT (cmd: 0x032 has 30 bytes)
+  section 6.8 of the datasheet mentions 256 bits = 32 bytes for the LUT
+  chapter 7 tells 30 bytes
+
+  according to section 6.8:
+  20 bytes waveform
+  10 bytes timing
+  1 byte named as VSH/VSL
+  1 empty byte
+  according to the command table, the lut has 240 bits (=30 bytes * 8 bits)
+
+
+  LUT / Refresh time
+    total_refresh_time = (refresh_lines + dummy_lines*2)*TGate*TS_Sum/f_OSC
+
+    f_OSC=1MHz (according to the datasheets)
+    refreh_lines = 296 (for the waveshare display, 0x045 cmd)
+    dummy_lines = 22 (for the upcoming u8g2 code, 0x03a cmd)
+    TGate = 62 (POR default, 0x03b cmd)
+    TS_Sum: Sum of all TS entries of the second part of the LUT
+    f_OSC: 1MHz according to the datasheet.
+
+    so we have
+
+    total_refresh_time = 21080*TS_Sum/1000000 = 21ms * TS_Sum
+
+
+  This file includes two devices:
+    u8x8_d_il3820_296x128		--> includes LUT which is probably from the WaveShare 2.9 Vendor
+    u8x8_d_il3820_v2_296x128		--> includes LUT which was optimized for faster speed and lesser flicker
+
+*/
+  
+/* Waveform part of the LUT (20 bytes) */
+/* bit 7/6: 1 - 1 transition */
+/* bit 5/4: 1 - 0 transition */
+/* bit 3/2: 0 - 1 transition */
+/* bit 1/0: 0 - 0 transition */
+/* 	00 – VSS */
+/* 	01 – VSH */
+/* 	10 – VSL */
+/* 	11 – NA */
+  
+
+#include "u8x8.h"
+
+/*=================================================*/
+/* common code for all devices */
+
+
+static const uint8_t u8x8_d_il3820_296x128_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x22, 0xc0),			/* enable clock and charge pump */
+  U8X8_C(0x20),				/* execute sequence */  
+  U8X8_DLY(200),				/* according to my measures it may take up to 150ms */
+  U8X8_DLY(100),				/* but it might take longer */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_il3820_296x128_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */  
+  /* disable clock and charge pump only, deep sleep is not entered, because we will loose RAM content */
+  U8X8_CA(0x22, 0x02),			/* only disable charge pump, HW reset seems to be required if the clock is disabled */
+  U8X8_C(0x20),				/* execute sequence */  
+  U8X8_DLY(20),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+// static const uint8_t u8x8_d_il3820_296x128_flip0_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+// static const uint8_t u8x8_d_il3820_296x128_flip1_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+
+static const u8x8_display_info_t u8x8_il3820_296x128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 120,
+  /* pre_chip_disable_wait_ns = */ 60,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 50,		/* IL3820 */
+  /* sck_pulse_width_ns = */ 125,	/* IL3820: 125ns, clock cycle = 250ns */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	
+  /* tile_width = */ 37,		/* 37*8 = 296 */
+  /* tile_hight = */ 16,		/* 16*8 = 128 */	
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 296,
+  /* pixel_height = */ 128
+};
+
+
+static uint8_t *u8x8_convert_tile_for_il3820(uint8_t *t)
+{
+  uint8_t i;
+  static uint8_t buf[8];
+  uint8_t *pbuf = buf;
+
+  for( i = 0; i < 8; i++ )
+  {
+    *pbuf++ = ~(*t++);
+  }
+  return buf;
+}
+
+static void u8x8_d_il3820_draw_tile(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr) U8X8_NOINLINE;
+static void u8x8_d_il3820_draw_tile(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr)
+{
+  uint16_t x;
+  uint8_t c, page;
+  uint8_t *ptr;
+  u8x8_cad_StartTransfer(u8x8);
+
+  page = u8x8->display_info->tile_height;
+  page --;
+  page -= (((u8x8_tile_t *)arg_ptr)->y_pos);
+  
+  x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+  x *= 8;
+  x += u8x8->x_offset;
+
+  //u8x8_cad_SendCmd(u8x8, 0x011 );	/* cursor increment mode */
+  //u8x8_cad_SendArg(u8x8, 7);
+
+  u8x8_cad_SendCmd(u8x8, 0x04f );	/* set cursor column */
+  u8x8_cad_SendArg(u8x8, x&255);
+  u8x8_cad_SendArg(u8x8, x>>8);
+
+  u8x8_cad_SendCmd(u8x8, 0x04e );	/* set cursor row */
+  u8x8_cad_SendArg(u8x8, page);
+
+  u8x8_cad_SendCmd(u8x8, 0x024 );
+  
+  do
+  {
+    c = ((u8x8_tile_t *)arg_ptr)->cnt;
+    ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+    do
+    {
+      u8x8_cad_SendData(u8x8, 8, u8x8_convert_tile_for_il3820(ptr));
+      ptr += 8;
+      x += 8;
+      c--;
+    } while( c > 0 );
+    
+    arg_int--;
+  } while( arg_int > 0 );
+  
+  u8x8_cad_EndTransfer(u8x8);
+}
+
+
+
+static const uint8_t u8x8_d_il3820_exec_1000dly_seq[] = {
+  // assumes, that the start transfer has happend
+  U8X8_CA(0x22, 0x04),	/* display update seq. option: pattern display */
+  U8X8_C(0x20),	/* execute sequence */
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static void u8x8_d_il3820_first_init(u8x8_t *u8x8)
+{
+      u8x8_ClearDisplay(u8x8);
+  
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x032);		// program update sequence
+      u8x8_cad_SendMultipleArg(u8x8, 8, 0x055);		// all black
+      u8x8_cad_SendMultipleArg(u8x8, 12, 0x0aa);		// all white
+      u8x8_cad_SendMultipleArg(u8x8, 10, 0x022);		// 830ms
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_exec_1000dly_seq);
+  
+}
+
+#ifdef OBSOLETE
+static void u8x8_d_il3820_second_init(u8x8_t *u8x8)
+{
+      u8x8_ClearDisplay(u8x8);
+  
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x032);		// program update sequence
+      u8x8_cad_SendMultipleArg(u8x8, 20, 0x000);		// do nothing
+      u8x8_cad_SendMultipleArg(u8x8, 10, 0x011);		// 414ms dly
+      /* reuse sequence from above, ok some time is wasted here, */
+      /* delay could be lesser */
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_exec_1000dly_seq);  
+}
+#endif
+
+
+/*=================================================*/
+/* first version, LUT from WaveShare */
+
+
+/* http://www.waveshare.com/wiki/File:2.9inch_e-Paper_Module_code.7z */
+static const uint8_t u8x8_d_il3820_296x128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_CA(0x10, 0x00),	/* Deep Sleep mode Control: Disable */
+  U8X8_C(0x01),
+  U8X8_A(295 % 256), U8X8_A(295/256), U8X8_A(0),
+  
+  
+  U8X8_CA(0x03, 0x00), 	/* Gate Driving voltage: 15V (lowest value)*/
+  U8X8_CA(0x04, 0x0a), 	/* Source Driving voltage: 15V (mid value and POR)*/
+  
+  //U8X8_CA(0x22, 0xc0),	/* display update seq. option: enable clk, enable CP, .... todo: this is never activated */
+
+  //U8X8_CA(0x0b, 7),	/* Set Delay of gate and source non overlap period, POR = 7 */
+  U8X8_CA(0x2c, 0xa8),	/* write vcom value*/
+  U8X8_CA(0x3a, 0x16),	/* dummy lines POR=22 (0x016) */
+  U8X8_CA(0x3b, 0x08),	/* gate time POR=0x08*/
+  U8X8_CA(0x3c, 0x33),	/* select boarder waveform */
+  //U8X8_CA(0x22, 0xc4),	/* display update seq. option: clk -> CP -> LUT -> initial display -> pattern display */
+
+
+  U8X8_CA(0x11, 0x07),	/* Define data entry mode, x&y inc, x first*/
+
+  U8X8_CAA(0x44, 0, 29),	/* RAM x start & end, 32*4=128 */
+  U8X8_CAAAA(0x45, 0, 0, 295&255, 295>>8),	/* RAM y start & end, 0..295 */
+  
+  //U8X8_CA(0x4e, 0),	/* set x pos, 0..29? */
+  //U8X8_CAA(0x4f, 0, 0),	/* set y pos, 0...320??? */
+
+
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const uint8_t u8x8_d_il3820_to_display_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+/*
+0x50, 0xAA, 0x55, 0xAA, 0x11, 	0x00, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 	0x00, 0x00, 0x00, 0x00, 0x00, 
+0xFF, 0xFF, 0x1F, 0x00, 0x00, 		0x00, 0x00, 0x00, 0x00, 0x00
+measured 1582 ms
+*/
+  U8X8_C(0x32),	/* write LUT register*/
+  /* original values */
+  U8X8_A(0x50),
+  U8X8_A(0xaa),
+  U8X8_A(0x55),
+  U8X8_A(0xaa),  
+  U8X8_A(0x11),
+  
+  U8X8_A(0x11),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),  
+  U8X8_A(0x00),
+  
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  
+  /* Timing part of the LUT, 20 Phases with 4 bit each: 10 bytes */
+  U8X8_A(0xff),
+  U8X8_A(0xff),
+  U8X8_A(0x3f),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+
+  U8X8_CA(0x22, 0x04),	/* display update seq. option: pattern display, assumes clk and charge pump are enabled  */
+  U8X8_C(0x20),	/* execute sequence */
+  
+  U8X8_DLY(250),	/* delay for 1620ms. The current sequence takes 1582ms */
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(120),
+   
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_il3820_296x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_il3820_296x128_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_296x128_init_seq);    
+
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_296x128_powersave0_seq);
+      u8x8_d_il3820_first_init(u8x8);
+
+      /* usually the DISPLAY_INIT message leaves the display in power save state */
+      /* however this is not done for e-paper devices, see: */
+      /* https://github.com/olikraus/u8g2/wiki/internal#powersave-mode */
+    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_296x128_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_296x128_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_d_il3820_draw_tile(u8x8, arg_int, arg_ptr);
+      break;
+    case U8X8_MSG_DISPLAY_REFRESH:
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_to_display_seq);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=================================================*/
+/* second version for the IL3820 display */
+
+
+/* http://www.waveshare.com/wiki/File:2.9inch_e-Paper_Module_code.7z */
+static const uint8_t u8x8_d_il3820_v2_296x128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  // U8X8_CA(0x10, 0x00),	/* Deep Sleep mode Control: POR: Normal mode */
+  U8X8_C(0x01),
+  U8X8_A(295 % 256), U8X8_A(295/256), U8X8_A(0),
+  
+  /* the driving voltagesmust not be that high, in order to aviod level change after */
+  /* some seconds (which happens with 0xea */
+  U8X8_CA(0x03, 0x75), 	/* Gate Driving voltage: +/-15V =0x00 POR (+22/-20V) = 0x0ea*/
+  U8X8_CA(0x04, 0x0a), 	/* Source Driving voltage:  (POR=0x0a=15V), max=0x0e*/
+  
+  U8X8_CA(0x0b, 7),	/* Set Delay of gate and source non overlap period, POR = 7 */
+  U8X8_CA(0x2c, 0xa8),	/* write vcom value*/
+  U8X8_CA(0x3a, 0x16),	/* dummy lines POR=22 (0x016) */
+  U8X8_CA(0x3b, 0x08),	/* gate time POR=0x08*/
+  U8X8_CA(0x3c, 0x33),	/* select boarder waveform */
+
+  U8X8_CA(0x11, 0x07),	/* Define data entry mode, x&y inc, x first*/
+  U8X8_CAA(0x44, 0, 29),	/* RAM x start & end, 32*4=128 */
+  U8X8_CAAAA(0x45, 0, 0, 295&255, 295>>8),	/* RAM y start & end, 0..295 */
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const uint8_t u8x8_d_il3820_v2_to_display_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+/*
+0xaa, 0x09, 0x09, 0x19, 0x19, 
+0x11, 0x11, 0x11, 0x11, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 
+
+0x75, 0x77, 0x77, 0x77, 0x07, 
+0x00, 0x00, 0x00, 0x00, 0x00
+measured 1240 ms
+*/
+  U8X8_C(0x32),	/* write LUT register*/
+  /* https://github.com/olikraus/u8g2/issues/347 */
+  U8X8_A(0xaa),
+  U8X8_A(0x09),
+  U8X8_A(0x09),
+  U8X8_A(0x19),  
+  U8X8_A(0x19),
+  
+  U8X8_A(0x11),
+  U8X8_A(0x11),
+  U8X8_A(0x11),
+  U8X8_A(0x11),  
+  U8X8_A(0x00),
+  
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  
+  /* Timing part of the LUT, 20 Phases with 4 bit each: 10 bytes */
+  U8X8_A(0x75),
+  U8X8_A(0x77),
+  U8X8_A(0x77),
+  U8X8_A(0x77),
+  U8X8_A(0x07),
+  
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  
+  U8X8_CA(0x22, 0x04),	/* display update seq. option: pattern display */
+  U8X8_C(0x20),	/* execute sequence */
+  
+  U8X8_DLY(250),	/* delay for 1400ms. The current sequence takes 1240ms, it was reported, that longer delays are better */
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  
+  U8X8_DLY(250),
+  U8X8_DLY(150),	/* extended, #318 */
+ 
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_il3820_v2_296x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_il3820_296x128_display_info);
+      break;    
+    case U8X8_MSG_DISPLAY_INIT:
+
+      u8x8_d_helper_display_init(u8x8);
+    
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_v2_296x128_init_seq);    
+
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_296x128_powersave0_seq);
+      u8x8_d_il3820_first_init(u8x8);
+      /* u8x8_d_il3820_second_init(u8x8); */  /* not required, u8g2.begin() will also clear the display once more */
+          
+      /* usually the DISPLAY_INIT message leaves the display in power save state */
+      /* however this is not done for e-paper devices, see: */
+      /* https://github.com/olikraus/u8g2/wiki/internal#powersave-mode */
+    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_296x128_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_296x128_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_d_il3820_draw_tile(u8x8, arg_int, arg_ptr);
+      break;
+    case U8X8_MSG_DISPLAY_REFRESH:
+      u8x8_cad_SendSequence(u8x8, u8x8_d_il3820_v2_to_display_seq);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ist3020.c

@@ -0,0 +1,200 @@
+/*
+
+  u8x8_d_ist3020.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_ist3020_erc19264_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a4),		                /* all pixel off, issue 142 */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ist3020_erc19264_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ist3020_erc19264_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ist3020_erc19264_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const u8x8_display_info_t u8x8_ist3020_erc19264_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 150,	/* IST3020 datasheet, page 56 */
+  /* pre_chip_disable_wait_ns = */ 150,	/* IST3020 datasheet, page 56 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 1, 
+  /* sda_setup_time_ns = */ 100,		/* IST3020 datasheet, page 56 */
+  /* sck_pulse_width_ns = */ 100,	/* IST3020 datasheet, page 56 */
+  /* sck_clock_hz = */ 4000000UL,	/* */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,	/* IST3020 datasheet, page 54 */
+  /* write_pulse_width_ns = */ 60,	/* IST3020 datasheet, page 54 */
+  /* tile_width = */ 24,		/* width of 24*8=192 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 64,
+  /* pixel_width = */ 192,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_d_ist3020_erc19264_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_C(0x0ab),            			/* build in osc on, used in ER code, but not mentioned in data sheet */
+  U8X8_C(0x0ae),		                /* display off */
+  
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  
+  U8X8_C(0x0a0),		                /* ADC set to reverse */
+  U8X8_C(0x0c8),		                /* common output mode */
+  // Flipmode
+  //U8X8_C(0x0a0),		                /* ADC set to reverse */
+  //U8X8_C(0x0c8),		                /* common output mode */
+  
+  U8X8_C(0x0a6),		                /* display normal, bit val 0: LCD pixel off. */
+  U8X8_C(0x0a3),		                /* FIX: LCD bias 1/7, old value was 1/9 (0x0a2) */
+  
+  U8X8_C(0x028|4),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|6),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|7),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  
+  U8X8_C(0x020),		                /* v0 voltage resistor ratio */
+  U8X8_CA(0x081, 0x019),		/* set contrast, contrast value (from ER code: 45) */
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+   
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_ist3020_erc19264(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ist3020_erc19264_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ist3020_erc19264_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ist3020_erc19264_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ist3020_erc19264_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ist3020_erc19264_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ist3020_erc19264_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int >> 2 );	/* st7567 has range from 0 to 63 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ks0108.c

@@ -0,0 +1,344 @@
+/*
+
+  u8x8_d_ks0108.c 
+  
+  The classic 5V LCD
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_ks0108_init_seq[] = {
+  U8X8_C(0x0c0),		                /* satart at the top  */  
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ks0108_powersave0_seq[] = {
+  U8X8_C(0x03f),		                /* display on */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ks0108_powersave1_seq[] = {
+  U8X8_C(0x03e),		                /* display off */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+struct u8x8_ks0108_vars
+{
+  uint8_t *ptr;
+  uint8_t x;
+  uint8_t c;
+  uint8_t arg_int;
+};
+
+static void u8x8_ks0108_out(u8x8_t *u8x8, struct u8x8_ks0108_vars *v, void *arg_ptr)
+{
+  uint8_t cnt;
+  u8x8_cad_SendCmd(u8x8, 0x040 | ((v->x << 3) & 63) );
+  u8x8_cad_SendCmd(u8x8, 0x0b8 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+  
+  while( v->arg_int > 0 )
+  {
+      /* calculate tiles to next boundary (end or chip limit) */
+      cnt = v->x;
+      cnt += 8;
+      cnt &= 0x0f8;
+      cnt -= v->x;
+            
+      if ( cnt > v->c )
+	cnt = v->c;
+    
+      /* of cours we still could use cnt=1 here... */
+      /* but setting cnt to 1 is not very efficient */
+      //cnt = 1;
+    
+      v->x +=cnt;
+      v->c-=cnt;
+      cnt<<=3;
+      u8x8_cad_SendData(u8x8, cnt, v->ptr);	/* note: SendData can not handle more than 255 bytes */    
+      v->ptr += cnt;
+    
+      if ( v->c == 0 )
+      {
+	v->ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	v->c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	v->arg_int--;
+      }
+      if ( ((v->x) & 7) == 0 )
+	break;       
+  } 
+}
+
+
+static const u8x8_display_info_t u8x8_ks0108_128x64_display_info =
+{
+  /* chip_enable_level = */ 0,		/* KS0108: Not used */
+  /* chip_disable_level = */ 1,		/* KS0108: Not used */
+  
+  /* post_chip_enable_wait_ns = */ 100,
+  /* pre_chip_disable_wait_ns = */ 20,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 		/* could be faster for the KS0108 */
+  /* sda_setup_time_ns = */ 12,		
+  /* sck_pulse_width_ns = */ 75,	/* KS0108: Not used */
+  /* sck_clock_hz = */ 4000000UL,	/* KS0108: Not used */
+  /* spi_mode = */ 0,				/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,	/* KS0108: Not used */
+  /* data_setup_time_ns = */ 200,
+  /* write_pulse_width_ns = */ 250,	/* KS0108: actially 450 ns, but additional 200 ns are added by the byte transfer function */
+  /* tile_width = */ 16,		/* width of 16*8=128 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_ks0108_128x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  struct u8x8_ks0108_vars v;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ks0108_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_init_seq);
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 2, NULL);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_init_seq);
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      
+      if ( arg_int == 0 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave0_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 2, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave0_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+	
+      }
+      else
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave1_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+	
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 2, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave1_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+	
+      }
+      break;
+// The KS0108 can not mirror the cols and rows, use U8g2 for rotation
+//    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+//      break;
+// The KS0108 has no internal contrast command
+//    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+//      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+
+      v.ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      v.x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      v.c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      v.arg_int = arg_int;    
+      
+      
+      if ( v.x < 8 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+	u8x8_ks0108_out(u8x8, &v, arg_ptr);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+      }
+      if ( v.x < 16 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 2, NULL);
+	u8x8_ks0108_out(u8x8, &v, arg_ptr);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+      }
+      //if ( v.x < 24 )
+      //{
+	//u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 4, NULL);
+	//u8x8_ks0108_out(u8x8, &v, arg_ptr);
+	//u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+      //}    
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+static const u8x8_display_info_t u8x8_ks0108_192x64_display_info =
+{
+  /* chip_enable_level = */ 0,		/* KS0108: Not used */
+  /* chip_disable_level = */ 1,		/* KS0108: Not used */
+  
+  /* post_chip_enable_wait_ns = */ 100,
+  /* pre_chip_disable_wait_ns = */ 20,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 		/* could be faster for the KS0108 */
+  /* sda_setup_time_ns = */ 12,		
+  /* sck_pulse_width_ns = */ 75,	/* KS0108: Not used */
+  /* sck_clock_hz = */ 4000000UL,	/* KS0108: Not used */
+  /* spi_mode = */ 0,				/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,	/* KS0108: Not used */
+  /* data_setup_time_ns = */ 200,
+  /* write_pulse_width_ns = */ 250,	/* KS0108: actially 450 ns, but additional 200 ns are added by the byte transfer function */
+  /* tile_width = */ 24,		/* width of 24*8=192 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 192,
+  /* pixel_height = */ 64
+};
+
+
+/* east rising (buydisplay.com) ERM19264 */
+/* left: 011, middle: 101, right: 110, no chip select: 111 */
+uint8_t u8x8_d_ks0108_erm19264(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  struct u8x8_ks0108_vars v;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ks0108_192x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 3, NULL);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_init_seq);
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 5, NULL);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_init_seq);
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 6, NULL);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_init_seq);
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      
+      if ( arg_int == 0 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 3, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave0_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 5, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave0_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 6, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave0_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+	
+      }
+      else
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 3, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave1_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 5, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave1_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 6, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ks0108_powersave1_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+	
+      }
+      break;
+// The KS0108 can not mirror the cols and rows, use U8g2 for rotation
+//    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+//      break;
+// The KS0108 has no internal contrast command
+//    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+//      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+
+      v.ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      v.x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      v.c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      v.arg_int = arg_int;    
+      
+/*
+    3-bit CS value:
+    In u8x8_byte_set_ks0108_cs(u8x8_t *u8x8, uint8_t arg) the lowest
+    bit is assigned to CS and highest bit if the 3-bit value to CS2
+    
+    CS: left part of the display  --> 6
+    CS1: middle part --> 5
+    CS2: right part of the display --> 3
+
+    Reference: https://github.com/olikraus/u8g2/issues/631
+*/
+      if ( v.x < 8 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 6, NULL);  // 3-->6, issue 631
+	u8x8_ks0108_out(u8x8, &v, arg_ptr);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+      }
+      if ( v.x < 16 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 5, NULL);
+	u8x8_ks0108_out(u8x8, &v, arg_ptr);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+      }
+      if ( v.x < 24 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 3, NULL); // 6-->3, // issue 631
+	u8x8_ks0108_out(u8x8, &v, arg_ptr);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 7, NULL);
+      }    
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_lc7981.c

@@ -0,0 +1,470 @@
+/*
+
+  u8x8_d_lc7981.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+/* no powersave mode for the LC7981 */
+// static const uint8_t u8x8_d_lc7981_powersave0_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+// static const uint8_t u8x8_d_lc7981_powersave1_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+/* no hardware flip for the LC7981 */
+// static const uint8_t u8x8_d_lc7981_flip0_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+// static const uint8_t u8x8_d_lc7981_flip1_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+
+/* http://graphics.stanford.edu/~seander/bithacks.html */
+static uint8_t reverse_byte(uint8_t v)
+{
+  // if ( v != 0 && v != 255 )  does not help much
+  {
+    // swap odd and even bits
+    v = ((v >> 1) & 0x055) | ((v & 0x055) << 1);
+    // swap consecutive pairs
+    v = ((v >> 2) & 0x033) | ((v & 0x033) << 2);
+    // swap nibbles ... 
+    v = ((v >> 4) & 0x00F) | ((v & 0x00F) << 4);
+  }
+  return v;
+}
+
+static uint8_t u8x8_d_lc7981_common(u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t c, i, j;
+  uint16_t y;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y*=8;
+      y*= u8x8->display_info->tile_width;
+      /* x = ((u8x8_tile_t *)arg_ptr)->x_pos; x is ignored... no u8x8 support */
+      u8x8_cad_StartTransfer(u8x8);
+      /* 
+	Tile structure is reused here for the t6963, however u8x8 is not supported 
+	tile_ptr points to data which has cnt*8 bytes (same as SSD1306 tiles)
+	Buffer is expected to have 8 lines of code fitting to the t6963 internal memory
+	"cnt" includes the number of horizontal bytes. width is equal to cnt*8
+	
+	x is assumed to be zero
+    
+	TODO: Consider arg_int, however arg_int is not used by u8g2
+      */
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;	/* data ptr to the tiles */
+      for( i = 0; i < 8; i++ )
+      {
+	u8x8_cad_SendCmd(u8x8, 0x0a );	/* display ram (cursor) address low byte */
+	u8x8_cad_SendArg(u8x8, y&255);
+	u8x8_cad_SendCmd(u8x8, 0x0b );	/* display ram (cursor) address high byte */
+	u8x8_cad_SendArg(u8x8, y>>8);
+	
+	u8x8_cad_SendCmd(u8x8, 0x0c );	/* write start */
+	/*
+	  The LC7981 has the MSB at the right position, which is exactly the opposite to the T6963.
+	  Instead of writing a third hvline procedure for this device, we just revert the bytes before 
+	  transmit. This is slow because:
+	    - the bit reverse itself
+	    - the single byte transfer 
+	   The one byte is transmitted via SendArg, which is ok, because CAD = 100
+	*/
+	for( j = 0; j < c; j++ )
+	  u8x8_cad_SendArg(u8x8, reverse_byte(*ptr++));
+	
+	//u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes, send one line of data */
+	//ptr += u8x8->display_info->tile_width;
+	
+	y += u8x8->display_info->tile_width;
+      }
+
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    /*	handled in the calling procedure 
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_init_seq);
+      break;
+    */
+    /* power save is not there... 
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_powersave1_seq);
+      break;
+    */
+    /* hardware flip not is not available
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+    */
+#ifdef U8X8_WITH_SET_CONTRAST
+    /* no contrast setting :-(
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int  );
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+  */
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*================================================*/
+/* LC7981 160x80 LCD*/
+
+static const u8x8_display_info_t u8x8_lc7981_160x80_display_info =
+{
+  /* chip_enable_level = */ 0,	/* LC7981 has a low active CS*/
+  /* chip_disable_level = */ 1,
+  
+  /* from here... */
+  /* post_chip_enable_wait_ns = */ 20,	
+  /* pre_chip_disable_wait_ns = */ 20,	
+  /* reset_pulse_width_ms = */ 1, 	
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* ... to here, values are ignored, because this is a parallel interface only */
+  
+  /* data_setup_time_ns = */ 220,	
+  /* write_pulse_width_ns = */ 20,	
+  /* tile_width = */ 20,		/* width of 20*8=160 pixel */
+  /* tile_hight = */ 10,
+  /* default_x_offset = */ 0,	
+  /* flipmode_x_offset = */ 0,	
+  /* pixel_width = */ 160,
+  /* pixel_height = */ 80
+};
+
+static const uint8_t u8x8_d_lc7981_160x80_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_DLY(50),
+
+  U8X8_CA(0x00, 0x32),			/* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */
+  U8X8_CA(0x01, 0x07),			/* character/bits per pixel pitch */
+  U8X8_CA(0x02, 160/8-1),		/* number of chars/byte width of the screen */
+  U8X8_CA(0x03, 0x50),			/* time division:  50 (1/80 duty cycle) */
+  U8X8_CA(0x08, 0x00),			/* display start low */
+  U8X8_CA(0x09, 0x00),			/* display start high */
+
+  U8X8_DLY(10),
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_lc7981_160x80(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_160x80_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_160x80_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+
+/*================================================*/
+/* LC7981 160x160 LCD*/
+
+static const u8x8_display_info_t u8x8_lc7981_160x160_display_info =
+{
+  /* chip_enable_level = */ 0,	/* LC7981 has a low active CS*/
+  /* chip_disable_level = */ 1,
+  
+  /* from here... */
+  /* post_chip_enable_wait_ns = */ 20,	
+  /* pre_chip_disable_wait_ns = */ 20,	
+  /* reset_pulse_width_ms = */ 1, 	
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* ... to here, values are ignored, because this is a parallel interface only */
+  
+  /* data_setup_time_ns = */ 220,	
+  /* write_pulse_width_ns = */ 20,	
+  /* tile_width = */ 20,		/* width of 20*8=160 pixel */
+  /* tile_hight = */ 20,
+  /* default_x_offset = */ 0,	
+  /* flipmode_x_offset = */ 0,	
+  /* pixel_width = */ 160,
+  /* pixel_height = */ 160
+};
+
+static const uint8_t u8x8_d_lc7981_160x160_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_DLY(50),
+
+  U8X8_CA(0x00, 0x32),			/* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */
+  U8X8_CA(0x01, 0x07),			/* character/bits per pixel pitch */
+  U8X8_CA(0x02, 160/8-1),		/* number of chars/byte width of the screen */
+  U8X8_CA(0x03, 159),			/* time division */
+  U8X8_CA(0x08, 0x00),			/* display start low */
+  U8X8_CA(0x09, 0x00),			/* display start high */
+
+  U8X8_DLY(10),
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_lc7981_160x160(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_160x160_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_160x160_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+
+/*================================================*/
+/* LC7981 240x128 LCD*/
+
+static const u8x8_display_info_t u8x8_lc7981_240x128_display_info =
+{
+  /* chip_enable_level = */ 0,	/* LC7981 has a low active CS*/
+  /* chip_disable_level = */ 1,
+  
+  /* from here... */
+  /* post_chip_enable_wait_ns = */ 20,	
+  /* pre_chip_disable_wait_ns = */ 20,	
+  /* reset_pulse_width_ms = */ 1, 	
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* ... to here, values are ignored, because this is a parallel interface only */
+  
+  /* data_setup_time_ns = */ 220,	
+  /* write_pulse_width_ns = */ 20,	
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,	
+  /* flipmode_x_offset = */ 0,	
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 128
+};
+
+static const uint8_t u8x8_d_lc7981_240x128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_DLY(50),
+
+  U8X8_CA(0x00, 0x32),			/* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */
+  U8X8_CA(0x01, 0x07),			/* character/bits per pixel pitch */
+  U8X8_CA(0x02, 240/8-1),		/* number of chars/byte width of the screen */
+  U8X8_CA(0x03, 0x7f),			/* time division */
+  U8X8_CA(0x08, 0x00),			/* display start low */
+  U8X8_CA(0x09, 0x00),			/* display start high */
+
+  U8X8_DLY(10),
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_lc7981_240x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_240x128_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_240x128_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+
+/*================================================*/
+/* LC7981 240x64 LCD*/
+/* https://github.com/olikraus/u8g2/issues/642 */
+
+static const u8x8_display_info_t u8x8_lc7981_240x64_display_info =
+{
+  /* chip_enable_level = */ 0,	/* LC7981 has a low active CS*/
+  /* chip_disable_level = */ 1,
+  
+  /* from here... */
+  /* post_chip_enable_wait_ns = */ 20,	
+  /* pre_chip_disable_wait_ns = */ 20,	
+  /* reset_pulse_width_ms = */ 1, 	
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* ... to here, values are ignored, because this is a parallel interface only */
+  
+  /* data_setup_time_ns = */ 220,	
+  /* write_pulse_width_ns = */ 20,	
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,	
+  /* flipmode_x_offset = */ 0,	
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_d_lc7981_240x64_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_DLY(50),
+
+  U8X8_CA(0x00, 0x32),			/* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */
+  U8X8_CA(0x01, 0x07),			/* character/bits per pixel pitch */
+  U8X8_CA(0x02, 240/8-1),		/* number of chars/byte width of the screen */
+  U8X8_CA(0x03, 0x7f),			/* time division */
+  U8X8_CA(0x08, 0x00),			/* display start low */
+  U8X8_CA(0x09, 0x00),			/* display start high */
+
+  U8X8_DLY(10),
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_lc7981_240x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_240x64_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_240x64_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ld7032_60x32.c

@@ -0,0 +1,207 @@
+/*
+
+  u8x8_d_ld7032_60x32.c
+  Note: Flip Mode is NOT supported
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+/* testboard U8GLIB_LD7032_60x32 u8g(11, 12, 9, 10, 8);	// SPI Com: SCK = 11, MOSI = 12, CS = 9, A0 = 10, RST = 8  (SW SPI Nano Board) */
+/* http://www.seeedstudio.com/document/pdf/0.5OLED%20SPEC.pdf */
+static const uint8_t u8x8_d_ld7032_60x32_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  //U8X8_CA(0x002, 0x001),		/* Dot Matrix Display ON */
+  U8X8_CA(0x014, 0x000),		/* Stand-by OFF */
+  U8X8_CA(0x01a, 0x004),		/* Dot Matrix Frame Rate,  special value for this OLED from manual*/
+  U8X8_CA(0x01d, 0x000),		/* Graphics Memory Writing Direction: reset default (right down, horizontal) */
+  U8X8_CA(0x009, 0x000),		/* Display Direction:  reset default (x,y: min --> max) */
+  U8X8_CAA(0x030, 0x000, 0x03b),	/* Display Size X, Column Start - End*/
+  U8X8_CAA(0x032, 0x000, 0x01f),	/* Display Size Y, Row Start - End*/
+  U8X8_CA(0x010, 0x000),		/* Peak Pulse Width Set: 0 SCLK */
+  U8X8_CA(0x016, 0x000),		/* Peak Pulse Delay Set: 0 SCLK */
+  U8X8_CA(0x012, 0x040),		/* Dot Matrix Current Level Set: 0x050 * 1 uA = 80 uA */
+  U8X8_CA(0x018, 0x003),		/* Pre-Charge Pulse Width: 3 SCLK */
+  U8X8_CA(0x044, 0x002),		/* Pre-Charge Mode: Every Time */
+  U8X8_CA(0x048, 0x003),		/* Row overlap timing: Pre-Charge + Peak Delay + Peak boot Timing */
+  U8X8_CA(0x03f, 0x011),		/* VCC_R_SEL: ??? */
+  U8X8_CA(0x03d, 0x000),		/* VSS selection: 2.8V */
+  //U8X8_CA(0x002, 0x001),		/* Dot Matrix Display ON */
+  
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ld7032_60x32_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x002, 0x001),		/* Dot Matrix Display ON */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ld7032_60x32_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x002, 0x000),		/* Dot Matrix Display ON */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ld7032_60x32_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x009, 0x000),		/* Display Direction:  reset default (x,y: min --> max) */  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ld7032_60x32_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  //U8X8_CA(0x009, 0x002),		/* Display Direction:  reset default (x,y: min --> max) */  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_ld7032_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ld7032_60x32_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ld7032_60x32_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ld7032_60x32_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ld7032_60x32_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ld7032_60x32_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ld7032_60x32_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x012 );
+      if ( arg_int > 0x07f )			/* default is 0x040, limit to 0x07f to be on the safe side (hopefully) */
+	arg_int= 0x07f;
+      u8x8_cad_SendArg(u8x8, arg_int );	/* values from 0x00 to 0x0ff are allowed, bit will all values be safe??? */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x += u8x8->x_offset/8;
+      u8x8_cad_SendCmd(u8x8, 0x034 );
+      u8x8_cad_SendArg(u8x8, x );
+      u8x8_cad_SendCmd(u8x8, 0x035 );
+      u8x8_cad_SendArg(u8x8, 0x007 );
+      u8x8_cad_SendCmd(u8x8, 0x036 );
+      u8x8_cad_SendArg(u8x8, (((u8x8_tile_t *)arg_ptr)->y_pos)*8 );
+      u8x8_cad_SendCmd(u8x8, 0x037 );
+      u8x8_cad_SendArg(u8x8, 0x01f );
+      u8x8_cad_SendCmd(u8x8, 0x008 );
+    
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ld7032_60x32_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 15,
+  /* pre_chip_disable_wait_ns = */ 20,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 30,		/* 20ns, but cycle time is 60ns, so use 60/2 */
+  /* sck_pulse_width_ns = */ 30,	/* 20ns, but cycle time is 60ns, so use 60/2  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 20,
+  /* write_pulse_width_ns = */ 40,	
+  /* tile_width = */ 8,
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 60,
+  /* pixel_height = */ 32
+};
+
+uint8_t u8x8_d_ld7032_60x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ld7032_60x32_display_info);
+      return 1;
+    }
+    return u8x8_d_ld7032_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ls013b7dh03.c

@@ -0,0 +1,122 @@
+/*
+
+  u8x8_d_ls013b7dh03.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  The LS013B7DH02 is a simple display and controller
+  --> no support for contrast adjustment, flip and power down.
+*/
+
+#include "u8x8.h"
+
+#define SWAP8(a) ((((a) & 0x80) >> 7) | (((a) & 0x40) >> 5) | (((a) & 0x20) >> 3) | (((a) & 0x10) >> 1) | (((a) & 0x08) << 1) | (((a) & 0x04) << 3) | (((a) & 0x02) << 5) | (((a) & 0x01) << 7))
+
+#define LS013B7DH03_CMD_UPDATE     (0x01)
+#define LS013B7DH03_CMD_ALL_CLEAR  (0x04)
+#define LS013B7DH03_VAL_TRAILER    (0x00)
+
+static const u8x8_display_info_t u8x8_ls013b7dh03_128x128_display_info =
+{
+  /* chip_enable_level = */ 1,
+  /* chip_disable_level = */ 0,
+  /* post_chip_enable_wait_ns = */ 50,
+  /* pre_chip_disable_wait_ns = */ 50,
+  /* reset_pulse_width_ms = */ 1,
+  /* post_reset_wait_ms = */ 6,
+  /* sda_setup_time_ns = */ 227,	/* 227 nsec according to the datasheet */		
+  /* sck_pulse_width_ns = */  255,	/* 450 nsec according to the datasheet */
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 2,		/* active low, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 100,
+  /* write_pulse_width_ns = */ 100,
+  /* tile_width = */ 16,
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 128
+};
+
+uint8_t u8x8_d_ls013b7dh03_128x128(u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t y, c, i;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ls013b7dh03_128x128_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+
+      /* clear screen */
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, SWAP8(LS013B7DH03_CMD_ALL_CLEAR) );
+      u8x8_cad_SendCmd(u8x8, LS013B7DH03_VAL_TRAILER);
+      u8x8_cad_EndTransfer(u8x8);
+
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      /* not available for the ls013b7dh03 */
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      /* each tile is 8 lines, with the data starting at the left edge */
+      y = ((((u8x8_tile_t *)arg_ptr)->y_pos) * 8) + 1;
+
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+
+      /* send data mode byte */
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, SWAP8(LS013B7DH03_CMD_UPDATE) );
+
+      /* send 8 lines of 16 bytes (=128 pixels) */
+      for( i = 0; i < 8; i++ )
+      {
+        u8x8_cad_SendCmd(u8x8, SWAP8(y + i) );
+        u8x8_cad_SendData(u8x8, c, ptr);
+        u8x8_cad_SendCmd(u8x8, LS013B7DH03_VAL_TRAILER);
+
+        ptr += c;
+      }
+
+      /* finish with a trailing byte */
+      u8x8_cad_SendCmd(u8x8, LS013B7DH03_VAL_TRAILER);
+      u8x8_cad_EndTransfer(u8x8);
+
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_max7219.c

@@ -0,0 +1,244 @@
+/*
+
+  u8x8_d_max7219.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+static const uint8_t u8x8_d_max7219_init_seq[] = {
+
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */  
+  U8X8_CA(15, 0),				/* test mode off */
+  U8X8_CA(15, 0),				/* test mode off */
+  U8X8_CA(15, 0),				/* test mode off */
+  U8X8_CA(15, 0),				/* test mode off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */  
+  U8X8_CA(12, 0),				/*  */
+  U8X8_CA(12, 0),				/*  */
+  U8X8_CA(12, 0),				/*  */
+  U8X8_CA(12, 0),				/*  */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */  
+  U8X8_CA(9, 0),				/* decode mode: graphics */
+  U8X8_CA(9, 0),				/* decode mode: graphics */
+  U8X8_CA(9, 0),				/* decode mode: graphics */
+  U8X8_CA(9, 0),				/* decode mode: graphics */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */  
+  U8X8_CA(10, 10),				/* medium high intensity */
+  U8X8_CA(10, 10),				/* medium high intensity */
+  U8X8_CA(10, 10),				/* medium high intensity */
+  U8X8_CA(10, 10),				/* medium high intensity */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */  
+  U8X8_CA(11, 7),				/* scan limit: display all digits (assuming a 8x8 matrix) */
+  U8X8_CA(11, 7),				/* scan limit: display all digits (assuming a 8x8 matrix) */
+  U8X8_CA(11, 7),				/* scan limit: display all digits (assuming a 8x8 matrix) */
+  U8X8_CA(11, 7),				/* scan limit: display all digits (assuming a 8x8 matrix) */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+
+
+  //U8X8_CA(12, 0),				/* shutdown */
+    
+  //U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_max7219_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(12, 1),				/* display on */
+  U8X8_CA(12, 1),				/* display on */
+  U8X8_CA(12, 1),				/* display on */
+  U8X8_CA(12, 1),				/* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_max7219_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(12, 0),				/* shutdown */
+  U8X8_CA(12, 0),				/* shutdown */
+  U8X8_CA(12, 0),				/* shutdown */
+  U8X8_CA(12, 0),				/* shutdown */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_max7219_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t c, j, i;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcf8812_96x65_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_max7219_powersave1_seq);
+      break;
+/*  not supported by MAX7219
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      break;
+*/
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 10 );    /* brightness */
+      u8x8_cad_SendArg(u8x8, (arg_int>>4) );	/* 0..15 for contrast */
+      u8x8_cad_SendCmd(u8x8, 10 );    /* brightness */
+      u8x8_cad_SendArg(u8x8, (arg_int>>4) );	/* 0..15 for contrast */
+      u8x8_cad_SendCmd(u8x8, 10 );    /* brightness */
+      u8x8_cad_SendArg(u8x8, (arg_int>>4) );	/* 0..15 for contrast */
+      u8x8_cad_SendCmd(u8x8, 10 );    /* brightness */
+      u8x8_cad_SendArg(u8x8, (arg_int>>4) );	/* 0..15 for contrast */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      /* transfer always has to start at x pos 0 (u8x8 is not supported) */
+      /* also y pos has to be 0 */
+      /* arg_int is ignored */
+      //x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;	/* data ptr to the tiles */
+      for( i = 0; i < 8; i++ )
+      {
+	u8x8_cad_StartTransfer(u8x8);
+	for( j = 0; j < c; j++ )
+	{
+	  u8x8_cad_SendCmd(u8x8, i+1);
+	  u8x8_cad_SendArg(u8x8, *ptr );
+	  ptr++;
+	}
+	u8x8_cad_EndTransfer(u8x8);
+      }
+      
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_max7219_32x8_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 100,
+  /* pre_chip_disable_wait_ns = */ 100,
+  /* reset_pulse_width_ms = */ 100, 
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 100,	
+  /* sck_pulse_width_ns = */ 100,	
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	
+  /* tile_width = */ 4,
+  /* tile_hight = */ 1,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 32,
+  /* pixel_height = */ 8
+};
+
+uint8_t u8x8_d_max7219_32x8(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_max7219_32x8_display_info);
+      return 1;
+    }
+    return u8x8_d_max7219_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+/*==============================*/
+
+static const u8x8_display_info_t u8x8_max7219_8x8_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 100,
+  /* pre_chip_disable_wait_ns = */ 100,
+  /* reset_pulse_width_ms = */ 100, 
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 100,	
+  /* sck_pulse_width_ns = */ 100,	
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	
+  /* tile_width = */ 1,
+  /* tile_hight = */ 1,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 8,
+  /* pixel_height = */ 8
+};
+
+uint8_t u8x8_d_max7219_8x8(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_max7219_8x8_display_info);
+      return 1;
+    }
+    return u8x8_d_max7219_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_pcd8544_84x48.c

@@ -0,0 +1,166 @@
+/*
+
+  u8x8_d_pcd8544_84x48.c (so called "Nokia 5110" displays)
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_pcd8544_84x48_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x021),            			/* activate chip (PD=0), horizontal increment (V=0), enter extended command set (H=1) */
+  U8X8_C(0x006),		                /* temp. control: b10 = 2  */
+  U8X8_C(0x013),		                /* bias system 1:48 */
+  U8X8_C(0x0c0),		                /* medium Vop  */
+  
+  U8X8_C(0x020),		                /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */
+  U8X8_C(0x008),				/* blank */
+  U8X8_C(0x024),		                /* power down (PD=1), horizontal increment (V=0), enter normal command set (H=0) */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_pcd8544_84x48_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x020),		                /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */
+  U8X8_C(0x00c),				/* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_pcd8544_84x48_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x020),		                /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */
+  U8X8_C(0x008),				/* blank */
+  U8X8_C(0x024),		                /* power down (PD=1), horizontal increment (V=0), enter normal command set (H=0) */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+static const u8x8_display_info_t u8x8_pcd8544_84x48_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 5,
+  /* pre_chip_disable_wait_ns = */ 5,
+  /* reset_pulse_width_ms = */ 2, 
+  /* post_reset_wait_ms = */ 2, 
+  /* sda_setup_time_ns = */ 12,		
+  /* sck_pulse_width_ns = */ 75,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,
+  /* write_pulse_width_ns = */ 40,
+  /* tile_width = */ 11,		/* width of 11*8=88 pixel */
+  /* tile_hight = */ 6,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 84,
+  /* pixel_height = */ 48
+};
+
+uint8_t u8x8_d_pcd8544_84x48(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcd8544_84x48_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_powersave1_seq);
+      break;
+    // case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+    // 	  break; 	NOT SUPPORTED
+      
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x021 ); /* command mode, extended function set */
+      u8x8_cad_SendCmd(u8x8, 0x080 | (arg_int >> 1) );
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x020 ); /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */
+      u8x8_cad_SendCmd(u8x8, 0x080 | (x) );	/* set X address */
+      u8x8_cad_SendCmd(u8x8, 0x040 | (((u8x8_tile_t *)arg_ptr)->y_pos) );	/* set Y address */
+    
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;	
+      do
+      {
+	if ( c + x > 84u )
+	{
+	  if ( x >= 84u )
+	    break;
+	  c = 84u;
+	  c -= x;
+	}
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	x += c;
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_pcf8812.c

@@ -0,0 +1,193 @@
+/*
+
+  u8x8_d_pcf8812.c
+  
+  pcf8812: 65x102
+  pcf8814: 65x96
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+static const uint8_t u8x8_d_pcf8812_96x65_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x020),		                /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */
+  U8X8_C(0x008),		                /* blank display */
+  
+  U8X8_C(0x021),		                /* activate chip (PD=0), horizontal increment (V=0), enter extended command set (H=1) */
+  U8X8_C(0x006),		                /* temp. control: b10 = 2 */
+  U8X8_C(0x013),		                /* bias system, 0x010..0x07 1:48 */
+  U8X8_C(0x09f),				/* contrast setting, 0..127 */
+  //U8X8_CA(0x020 | 2, 0x080 | 0),				/* contrast setting, pcf8814 */
+
+  U8X8_C(0x024),		                /* deactivate chip (PD=1), horizontal increment (V=0), enter normal command set (H=0) */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_pcf8812_96x65_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x020),		                /* power on */
+  U8X8_C(0x00c),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_pcf8812_96x65_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x020),		                /* power on */
+  U8X8_C(0x008),		                /* blank display */
+  U8X8_C(0x024),		                /* power down */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_pcf8812_96x65_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcf8812_96x65_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_pcf8812_96x65_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_pcf8812_96x65_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_pcf8812_96x65_powersave1_seq);
+      break;
+/*
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_pcf8812_96x65_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_pcf8812_96x65_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+*/
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x021 );    /* command mode, extended function set */
+      u8x8_cad_SendArg(u8x8, (arg_int>>1)|0x80 );	/* 0..127 for contrast */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+    
+      u8x8_cad_SendCmd(u8x8, 0x020 );	/* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */
+      u8x8_cad_SendCmd(u8x8, 0x080 | x);
+      u8x8_cad_SendCmd(u8x8, 0x040 | ((u8x8_tile_t *)arg_ptr)->y_pos);
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	/*
+	do
+	{
+	  u8x8_cad_SendData(u8x8, 8, ptr);
+	  ptr += 8;
+	  c--;
+	} while( c > 0 );
+	*/
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_pcf8812_96x65_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 100,
+  /* pre_chip_disable_wait_ns = */ 100,
+  /* reset_pulse_width_ms = */ 100, 
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 100,	
+  /* sck_pulse_width_ns = */ 100,	
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	
+  /* tile_width = */ 12,
+  /* tile_hight = */ 9,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 96,
+  /* pixel_height = */ 65
+};
+
+uint8_t u8x8_d_pcf8812_96x65(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcf8812_96x65_display_info);
+      return 1;
+    }
+    return u8x8_d_pcf8812_96x65_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_pcf8814_hx1230.c

@@ -0,0 +1,198 @@
+/*
+
+  u8x8_d_pcf8814_hc1230.c
+  
+  pcf8814: 65x96
+  hx1230: 68x96
+  
+  pcf8814 and hc1230 are almost identical.
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+static const uint8_t u8x8_d_hx1230_96x68_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x020),		                /* power off */
+  U8X8_C(0x080),				/* contrast setting, 0..31, set to 0 */
+  U8X8_C(0x0a6),		                /* not inverted display */
+  U8X8_C(0x0a4),		                /* normal display mode */
+
+  U8X8_C(0x0a0),		                /* */
+  U8X8_C(0x0c0),		                /* */
+  
+  U8X8_C(0x040),		                /* start at scanline 0 */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_hx1230_96x68_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x02f),		                /* power on */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_hx1230_96x68_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a4),		                /* display off */
+  U8X8_C(0x020),		                /* power off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_hx1230_96x68_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),		                /* */
+  U8X8_C(0x0c0),		                /* */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_hx1230_96x68_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),		                /* */
+  U8X8_C(0x0c8),		                /* */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_hx1230_96x68_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_hx1230_96x68_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_hx1230_96x68_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_hx1230_96x68_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_hx1230_96x68_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_hx1230_96x68_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_hx1230_96x68_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, (arg_int>>3)|0x80 );	/* 0..31 for contrast */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+    
+      u8x8_cad_SendCmd(u8x8, x&15);
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | ((u8x8_tile_t *)arg_ptr)->y_pos);
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+static const u8x8_display_info_t u8x8_hx1230_96x68_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 100,
+  /* pre_chip_disable_wait_ns = */ 100,
+  /* reset_pulse_width_ms = */ 100, 
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 100,	
+  /* sck_pulse_width_ns = */ 100,	
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	
+  /* tile_width = */ 12,
+  /* tile_hight = */ 9,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 96,
+  /* pixel_height = */ 68
+};
+
+uint8_t u8x8_d_hx1230_96x68(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_hx1230_96x68_display_info);
+      return 1;
+    }
+    return u8x8_d_hx1230_96x68_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_sbn1661.c

@@ -0,0 +1,217 @@
+/*
+
+  u8x8_d_sbn1661.c 
+  
+  SED1520 / SBN1661 122x32 5V LCD
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_sbn1661_init_seq[] = {
+  U8X8_C(0x0c0),		                /* display start at line 0  */  
+  U8X8_C(0x0a0),		                /* a0: ADC forward, a1: ADC reverse */  
+  U8X8_C(0x0a4),		                /* a4: normal driving, a5: power save */  
+  U8X8_C(0x0a9),		                /* a8: 1/16, a9: 1/32 duty */  
+
+  //U8X8_C(0x0af),				/* display on */
+  
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sbn1661_powersave0_seq[] = {
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sbn1661_powersave1_seq[] = {
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+struct u8x8_sbn1661_vars
+{
+  uint8_t *ptr;
+  uint8_t x;
+  uint8_t c;
+  uint8_t arg_int;
+};
+
+#ifdef NOT_USED
+static void u8x8_sbn1661_out(u8x8_t *u8x8, struct u8x8_sbn1661_vars *v, void *arg_ptr)
+{
+  uint8_t cnt;
+  u8x8_cad_SendCmd(u8x8, 0x000 | ((v->x << 3) & 63) );
+  u8x8_cad_SendCmd(u8x8, 0x0b8 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+  
+  while( v->arg_int > 0 )
+  {
+      /* calculate tiles to next boundary (end or chip limit) */
+      cnt = v->x;
+      cnt += 8;
+      cnt &= 0x0f8;
+      cnt -= v->x;
+            
+      if ( cnt > v->c )
+	cnt = v->c;
+    
+      /* of course we still could use cnt=1 here... */
+      /* but setting cnt to 1 is not very efficient */
+      //cnt = 1;
+    
+      v->x +=cnt;
+      v->c-=cnt;
+      cnt<<=3;
+      u8x8_cad_SendData(u8x8, cnt, v->ptr);	/* note: SendData can not handle more than 255 bytes */    
+      v->ptr += cnt;
+    
+      if ( v->c == 0 )
+      {
+	v->ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	v->c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	v->arg_int--;
+      }
+      if ( ((v->x) & 7) == 0 )
+	break;       
+  } 
+}
+#endif /* NOT_USED */
+
+
+static const u8x8_display_info_t u8x8_sbn1661_122x32_display_info =
+{
+  /* chip_enable_level = */ 0,		/* sbn1661: Not used */
+  /* chip_disable_level = */ 1,		/* sbn1661: Not used */
+  
+  /* post_chip_enable_wait_ns = */ 100,
+  /* pre_chip_disable_wait_ns = */ 20,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 		/*  */
+  /* sda_setup_time_ns = */ 12,		
+  /* sck_pulse_width_ns = */ 75,	/* sbn1661: Not used */
+  /* sck_clock_hz = */ 4000000UL,	/* sbn1661: Not used */
+  /* spi_mode = */ 0,				/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,	/* sbn1661: Not used */
+  /* data_setup_time_ns = */ 200,
+  /* write_pulse_width_ns = */ 200,	/*  */
+  /* tile_width = */ 16,		/* width of 16*8=128 pixel */
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 122,
+  /* pixel_height = */ 32
+};
+
+uint8_t u8x8_d_sbn1661_122x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t *ptr;
+  //uint8_t x;
+  //uint8_t c;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sbn1661_122x32_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 0, NULL);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sbn1661_init_seq);
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sbn1661_init_seq);
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 1, NULL);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      
+      if ( arg_int == 0 )
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 0, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sbn1661_powersave0_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sbn1661_powersave0_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 1, NULL);	
+      }
+      else
+      {
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 0, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sbn1661_powersave1_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+	
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sbn1661_powersave1_seq);
+	u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 1, NULL);
+	
+      }
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      // x and c are ignored (u8g2 only)
+      //x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      //c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 0, NULL);
+      u8x8_cad_SendCmd(u8x8, 0x000 | 0);		// column 0
+      u8x8_cad_SendCmd(u8x8, 0x0b8 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      u8x8_cad_SendData(u8x8, 61, ptr);	/* note: SendData can not handle more than 255 bytes */    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 0, NULL);
+
+      ptr += 61;
+      
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_START_TRANSFER, 1, NULL);
+      u8x8_cad_SendCmd(u8x8, 0x000 | 0);		// column 0
+      u8x8_cad_SendCmd(u8x8, 0x0b8 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      u8x8_cad_SendData(u8x8, 61, ptr);	/* note: SendData can not handle more than 255 bytes */    
+      u8x8->cad_cb(u8x8, U8X8_MSG_CAD_END_TRANSFER, 1, NULL);
+    
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+uint8_t u8x8_d_sed1520_122x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  return u8x8_d_sbn1661_122x32(u8x8, msg, arg_int, arg_ptr);
+
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_sed1330.c

@@ -0,0 +1,351 @@
+/*
+
+  u8x8_d_sed1330.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  The device might also work with the RA8835, SED1335 and SED1336 controller.
+  The following devices might be compatible:
+    RA8835
+    SED1330
+    SED1335
+    S1D13700
+
+
+*/
+#include "u8x8.h"
+
+
+
+static const uint8_t u8x8_d_sed1330_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x040, 0x030),		/* sys init (0x040) with one arg, where 0x030 is a wild guess */
+  U8X8_CA(0x059, 0x004),               /* send display on command (hex 0x059, see p37 ) */
+							/* display cmd has one arg: 01010100 should enable all three blocks, but disable the cursor*/
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sed1330_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x058, 0x000),               /* send display off command (hex 0x059, see p37) and turn of all banks */
+  /* maybe send a sleep in cmd */
+  //U8X8_C(0x053)				/* sleep in: 0x053 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_sed1330_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t c, i;
+  uint16_t y;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
+    /*
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sed1330_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sed1330_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y*=8;
+      y*= u8x8->display_info->tile_width;
+    
+      u8x8_cad_StartTransfer(u8x8);
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;	/* data ptr to the tiles */
+      for( i = 0; i < 8; i++ )
+      {
+	u8x8_cad_SendCmd(u8x8, 0x046 );	/* CSRW command*/
+	u8x8_cad_SendArg(u8x8, y&255);		/* CSRW low adr byte */
+	u8x8_cad_SendArg(u8x8, y>>8);		/* CSRW high adr byte */
+	u8x8_cad_SendCmd(u8x8, 0x042 );	/* MWRITE */
+	
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes, send one line of data */
+	
+	ptr += u8x8->display_info->tile_width;
+	y += u8x8->display_info->tile_width;
+      }
+
+      /* sometimes the display switches off... so just sent a display on command */
+      u8x8_cad_SendCmd(u8x8, 0x059 );	/* display on */
+      u8x8_cad_SendArg(u8x8, 0x004);	/* arg for display on */
+
+      u8x8_cad_EndTransfer(u8x8);
+      //u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=============================================*/
+
+
+static const u8x8_display_info_t u8x8_sed1330_240x128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 30,	/* G242CX Datasheet p5 */
+  /* pre_chip_disable_wait_ns = */ 10,	/* G242CX Datasheet p5 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 120,		/* G242CX Datasheet p5 */
+  /* write_pulse_width_ns = */ 220,		/* G242CX Datasheet p5 */
+  /* tile_width = */ 0x01e,
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 128
+};
+
+/* 240x128 Seiko G242C */
+static const uint8_t u8x8_d_sed1330_240x128_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+
+  /* system init command, see also u8x8_d_sed1330_powersave0_seq */
+  U8X8_CA(0x040, 0x030),		/* sys init (0x040) with one arg, where 0x030 is a wild guess */
+  /* system init has total 8 parameters, so 7 more are here */
+  U8X8_A(0x087),				/* no idea here... WF (topmost bit) is set to one because it is suggested in the datasheet, lowest 3 bits refer to text mode only */
+  U8X8_A(0x007),				/* FY: height of a char+1, does not matter here (hopefully), because we use graphics mode only */
+  U8X8_A(0x01d),				/* C/R: this could be the number of horizontal bytes - 1 (Value confirmed with app notes p41) */
+  U8X8_A(0x050),					/* TC/R: According to app notes fOSC=6Mhz fFF=70Hz --> TC/R = 74d*/
+  U8X8_A(0x080),				/* L/F: Lines per frame - 1, probably this is the height of the display - 1 (value confirmed with app notes p41)*/
+  U8X8_A(0x01e),				/* Low byte of the virtual screen size. (Value confirmed with app notes p41)   */
+  U8X8_A(0),					/* High byte of the virtual screen size, see also section 9.1.2 */
+	
+  U8X8_C(0x044),				/* SCROLL */
+  U8X8_A(0x000),				
+  U8X8_A(0x000),				
+  U8X8_A(0x080),
+  U8X8_A(0x000),
+  U8X8_A(0x040),
+  U8X8_A(0x080),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+	
+  U8X8_CA(0x05a, 0),			/* HDOT SCR: Horizontal dotwise scroll... set to 0 */
+	
+  U8X8_CA(0x05b, 0x0c),			/* OVLAY: 2-layer, all graphics, OR between layer 1 and 2 */
+
+
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+};
+
+/* RA8835 NHD-240128BZ */
+static const uint8_t u8x8_d_rh8835_nhd_240128_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+
+  /* system init command, see also u8x8_d_sed1330_powersave0_seq */
+  U8X8_CA(0x040, 0x030),		/* sys init (0x040) with one arg, where 0x030 is a wild guess */
+  /* system init has total 8 parameters, so 7 more are here */
+  U8X8_A(0x087),				/* no idea here... WF (topmost bit) is set to one because it is suggested in the datasheet, lowest 3 bits refer to text mode only */
+  U8X8_A(0x007),				/* FY: height of a char+1, does not matter here (hopefully), because we use graphics mode only */
+  U8X8_A(0x01d),				/* C/R: this could be the number of horizontal bytes - 1 (Value confirmed with app notes p41) */
+  U8X8_A(0x050),					/* TC/R: According to app notes fOSC=6Mhz fFF=70Hz --> TC/R = 74d*/
+  U8X8_A(0x080),				/* L/F: Lines per frame - 1, probably this is the height of the display - 1 (value confirmed with app notes p41)*/
+  U8X8_A(0x01e),				/* Low byte of the virtual screen size. (Value confirmed with app notes p41)   */
+  U8X8_A(0),					/* High byte of the virtual screen size, see also section 9.1.2 */
+
+  U8X8_C(0x044),				/* SCROLL */
+  U8X8_A(0x000),				
+  U8X8_A(0x000),				
+  U8X8_A(0x080),
+  U8X8_A(0x000),
+  U8X8_A(0x040),
+  U8X8_A(0x080),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+	
+  //U8X8_CA(0x05a, 0),			/* HDOT SCR: Horizontal dotwise scroll... set to 0 */
+	
+  U8X8_CA(0x05b, 0x0c),			/* OVLAY: 2-layer, all graphics, OR between layer 1 and 2 */
+
+  //U8X8_CA(0x059, 0x04),               /* send display on command (hex 0x059, see p37 ) */
+  
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+  
+};
+
+
+uint8_t u8x8_d_sed1330_240x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sed1330_240x128_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sed1330_240x128_init_seq);
+      break;
+    default:
+      return u8x8_d_sed1330_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+uint8_t u8x8_d_ra8835_nhd_240x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sed1330_240x128_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_rh8835_nhd_240128_init_seq);
+      break;
+    default:
+      return u8x8_d_sed1330_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+
+/*=============================================*/
+
+
+static const u8x8_display_info_t u8x8_sed1330_320x240_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 30,	/* G242CX Datasheet p5 */
+  /* pre_chip_disable_wait_ns = */ 10,	/* G242CX Datasheet p5 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 120,		/* G242CX Datasheet p5 */
+  /* write_pulse_width_ns = */ 220,		/* G242CX Datasheet p5 */
+  /* tile_width = */ 40,
+  /* tile_hight = */ 30,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 320,
+  /* pixel_height = */ 240
+};
+
+static const uint8_t u8x8_d_sed1330_320x240_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+
+  /* system init command, see also u8x8_d_sed1330_powersave0_seq */
+  U8X8_CA(0x040, 0x030),		/* sys init (0x040) with one arg, where 0x030 is a wild guess */
+  /* system init has total 8 parameters, so 7 more are here */
+  U8X8_A(0x087),				/* no idea here... WF (topmost bit) is set to one because it is suggested in the datasheet, lowest 3 bits refer to text mode only */
+  U8X8_A(0x007),				/* FY: height of a char+1, does not matter here (hopefully), because we use graphics mode only */
+  U8X8_A(0x027),	/* 40-1 */		/* C/R: this could be the number of horizontal bytes - 1 (Value confirmed with app notes p41) */
+  U8X8_A(0x039),					/* TC/R: According to app notes fOSC=6Mhz fFF=70Hz --> TC/R = 74d*/
+  U8X8_A(0x0ef),				/* L/F: Lines per frame - 1, probably this is the height of the display - 1 (value confirmed with app notes p41)*/
+  U8X8_A(0x028),				/* Low byte of the virtual screen size. (Value confirmed with app notes p41)   */
+  U8X8_A(0),					/* High byte of the virtual screen size, see also section 9.1.2 */
+	
+  U8X8_C(0x044),				/* SCROLL */
+  U8X8_A(0x000),				
+  U8X8_A(0x000),				
+  U8X8_A(0x0ef),
+  U8X8_A(0x0b0),
+  U8X8_A(0x004),
+  U8X8_A(0x0ef),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+  U8X8_A(0x000),
+	
+  U8X8_CA(0x05a, 0),			/* HDOT SCR: Horizontal dotwise scroll... set to 0 */
+	
+  U8X8_CA(0x05b, 0x0c),			/* OVLAY: 2-layer, all graphics, OR between layer 1 and 2 */
+
+
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+};
+
+
+
+uint8_t u8x8_d_ra8835_320x240(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sed1330_320x240_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sed1330_320x240_init_seq);
+      break;
+    default:
+      return u8x8_d_sed1330_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_sh1106_64x32.c

@@ -0,0 +1,215 @@
+/*
+
+  u8x8_d_sh1106_64x32.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2018, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+/* issue 568 */
+static const uint8_t u8x8_d_sh1106_64x32_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x01f),		/* multiplex ratio, 0.42 OLED */
+  U8X8_CA(0x0d3, 0x000),		/* display offset, 0.42 OLED  */
+  U8X8_C(0x040),		                /* set display start line to 0, 0.42 OLED */
+  U8X8_CA(0xad, 0x8b),      	 	/* DC-DC ON/OFF Mode Set: Built-in DC-DC is used, Normal Display (POR = 0x8b) */
+  U8X8_C(0x33),				/* set charge pump voltage 0x30 (POR) .. 0x33 */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1, 0.66 OLED  */
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse, 0.66 OLED  */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), 0.66 OLED */
+  U8X8_CA(0x081, 0x080),		/* [2] set contrast control, 0.42 OLED datasheet: 0xcf */
+  U8X8_CA(0x0d9, 0x022),		/* [2] pre-charge period 0x022/f1, 0.42 OLED datasheet: 0x22 */
+  U8X8_CA(0x0db, 0x028),		/* vcomh deselect level, 0.42 OLED datasheet: 0x00 */
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_64x32_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_64x32_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_64x32_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_CA(0x0d3, 0),			/* display offset, 0.42 OLED  */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_64x32_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_CA(0x0d3, 0),		/* What is the correct offset in flip 1 mode?  --> Issue 547 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_sh1106_64x32_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1106_64x32_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_64x32_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+        u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_64x32_powersave0_seq);
+      else
+        u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_64x32_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+        u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_64x32_flip0_seq);
+        u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+        u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_64x32_flip1_seq);
+        u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/* copied from SSD1306 */
+static const u8x8_display_info_t u8x8_sh1106_64x32_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 8,
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 32,
+  /* flipmode_x_offset = */ 36,
+  /* pixel_width = */ 64,
+  /* pixel_height = */ 32
+};
+
+uint8_t u8x8_d_sh1106_64x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1106_64x32_display_info);
+      return 1;
+    }
+    else if ( msg == U8X8_MSG_DISPLAY_INIT )
+    {
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_64x32_init_seq);    
+      return 1;
+    }
+    return u8x8_d_sh1106_64x32_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_sh1106_72x40.c

@@ -0,0 +1,216 @@
+/*
+
+  u8x8_d_sh1106_72x40.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2018, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+/* WiseChip 0.42 OLED, issue 547 */
+static const uint8_t u8x8_d_sh1106_72x40_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x027),		/* multiplex ratio, 0.42 OLED */
+  U8X8_CA(0x0d3, 0x00c),		/* display offset, 0.42 OLED  */
+  U8X8_C(0x040),		                /* set display start line to 0, 0.42 OLED */
+  U8X8_CA(0xad, 0x8b),      	 	/* DC-DC ON/OFF Mode Set: Built-in DC-DC is used, Normal Display (POR = 0x8b) */
+  U8X8_C(0x33),				/* set charge pump voltage 0x30 (POR) .. 0x33 */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1, 0.66 OLED  */
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse, 0.66 OLED  */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), 0.66 OLED */
+  U8X8_CA(0x081, 0x080),		/* [2] set contrast control, 0.42 OLED datasheet: 0xcf */
+  U8X8_CA(0x0d9, 0x022),		/* [2] pre-charge period 0x022/f1, 0.42 OLED datasheet: 0x22 */
+  U8X8_CA(0x0db, 0x028),		/* vcomh deselect level, 0.42 OLED datasheet: 0x00 */
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_72x40_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_72x40_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_72x40_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_CA(0x0d3, 12),			/* display offset, 0.42 OLED  */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1106_72x40_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_CA(0x0d3, 52),		/* What is the correct offset in flip 1 mode?  --> Issue 547 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_sh1106_72x40_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1106_72x40_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_72x40_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_72x40_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_72x40_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_72x40_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_72x40_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/* copied from SSD1306 */
+static const u8x8_display_info_t u8x8_sh1106_72x40_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 9,
+  /* tile_hight = */ 5,
+  /* default_x_offset = */ 30,
+  /* flipmode_x_offset = */ 30,
+  /* pixel_width = */ 72,
+  /* pixel_height = */ 40
+};
+
+/* WiseChip 0.42" OLED */
+uint8_t u8x8_d_sh1106_72x40_wise(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1106_72x40_display_info);
+      return 1;
+    }
+    else if ( msg == U8X8_MSG_DISPLAY_INIT )
+    {
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_72x40_init_seq);    
+      return 1;
+    }
+    return u8x8_d_sh1106_72x40_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_sh1107.c

@@ -0,0 +1,399 @@
+/*
+
+  u8x8_d_sh1107.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+/* code copyied from SSD1306 */
+
+
+
+static const uint8_t u8x8_d_sh1107_64x128_noname_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1107_64x128_noname_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1107_64x128_noname_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1107_64x128_noname_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_sh1107_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1107_64x128_noname_display_info);
+      break;
+    */
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_64x128_noname_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_64x128_noname_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_64x128_noname_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_64x128_noname_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_64x128_noname_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* sh1107 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+
+      //u8x8_cad_SendCmd(u8x8, 0x040 ); /* set line offset to 0 */
+
+      // set column address
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x >> 4));
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x & 15))); /* probably wrong, should be SendCmd */
+      
+      // set page address
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos)); /* probably wrong, should be SendCmd */
+    
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	/*
+	do
+	{
+	  u8x8_cad_SendData(u8x8, 8, ptr);
+	  ptr += 8;
+	  c--;
+	} while( c > 0 );
+	*/
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*==================================================*/
+
+/* QG-6428TSWKG01 */
+static const uint8_t u8x8_d_sh1107_64x128_noname_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0dc, 0x000),		/* start line */
+  U8X8_CA(0x081, 0x02f), 		/* [2] set contrast control */
+  U8X8_C(0x020),		                /* use page addressing mode */
+
+  // U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0a8, 0x7f),		/* 0x03f) multiplex ratio */
+  U8X8_CA(0x0d3, 0x060),		/* display offset */
+  U8X8_CA(0x0d5, 0x051),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0d9, 0x022), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x035), 		/* vcomh deselect level */  
+  
+  U8X8_C(0x0b0), /* set page address */
+  U8X8_CA(0x0da, 0x012), /* set com pins */
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_sh1107_64x128_noname_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* sh1107: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* sh1107: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* sh1107: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* sh1107: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 8,
+  /* tile_height = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 64,
+  /* pixel_height = */ 128
+};
+
+uint8_t u8x8_d_sh1107_64x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_sh1107_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_64x128_noname_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1107_64x128_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*==================================================*/
+
+/* init sequence from Grove OLED 96x96 */
+static const uint8_t u8x8_d_sh1107_seeed_96x96_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x050),		/* clock divide ratio (0x00=1) and oscillator frequency (0x5) */
+  U8X8_C(0x020),		                /* use page addressing mode */
+  //U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio */
+  U8X8_CA(0x0d3, 0x000),		/* display offset */
+  U8X8_CA(0x0dc, 0x000),		/* start line */
+  //U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  //U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+
+  U8X8_CA(0x081, 0x080), 		/* [2] set contrast control */
+  U8X8_CA(0x0ad, 0x080), 		/* */  
+  U8X8_CA(0x0d9, 0x01f), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x027), 		/* vcomh deselect level */  
+  // if vcomh is 0, then this will give the biggest range for contrast control issue #98
+  // restored the old values for the noname constructor, because vcomh=0 will not work for all OLEDs, #116
+  
+  //U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_sh1107_seeed_96x96_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 100,		/* cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 100,	/* cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* sh1107: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 12,
+  /* tile_hight = */ 12,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 96,
+  /* pixel_height = */ 96
+};
+
+uint8_t u8x8_d_sh1107_seeed_96x96(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_sh1107_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_seeed_96x96_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1107_seeed_96x96_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/*==================================================*/
+/* 128x128 OLED: this display has a very strange x offset */
+
+/* sequence taken over from 64x128 sequence, because it seems to work mostly */
+static const uint8_t u8x8_d_sh1107_128x128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0dc, 0x000),		/* start line */
+  U8X8_CA(0x081, 0x02f), 		/* [2] set contrast control */
+  U8X8_C(0x020),		                /* use page addressing mode */
+
+  // U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0a8, 0x7f),		/* 0x03f multiplex ratio */
+  //U8X8_CA(0x0d3, 0x060),		/* display offset (removed, not in datasheet ) */
+  U8X8_CA(0x0d5, 0x050),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8), changed to 0x051, issue 501 */
+  U8X8_CA(0x0d9, 0x022), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x035), 		/* vcomh deselect level */  
+  
+  U8X8_C(0x0b0), /* set page address */
+  U8X8_CA(0x0da, 0x012), /* set com pins */
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const u8x8_display_info_t u8x8_sh1107_128x128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 100,		/* cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 100,	/* cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* sh1107: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 96,
+  /* flipmode_x_offset = */ 96,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 128
+};
+
+uint8_t u8x8_d_sh1107_128x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_sh1107_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1107_128x128_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1107_128x128_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_sh1108.c

@@ -0,0 +1,225 @@
+/*
+
+  u8x8_d_sh1108.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2018, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+/* 
+  code copyied from sh1107
+  SH1108: 160x160 controller from Sino Wealth
+*/
+
+
+
+static const uint8_t u8x8_d_sh1108_noname_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1108_noname_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1108_160x160_noname_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1108_160x160_noname_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_sh1108_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1108_64x128_noname_display_info);
+      break;
+    */
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1108_64x128_noname_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1108_noname_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1108_noname_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1108_160x160_noname_powersave0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1108_160x160_noname_powersave1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* sh1108 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+
+      //u8x8_cad_SendCmd(u8x8, 0x040 ); /* set line offset to 0 */
+
+      // set column address
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x >> 4));
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x & 15))); 
+      
+      // set page address
+      u8x8_cad_SendCmd(u8x8, 0x0b0 ); 		// page cmd is a two byte command
+      u8x8_cad_SendArg(u8x8, (((u8x8_tile_t *)arg_ptr)->y_pos)); 
+    
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*==================================================*/
+
+/* issue #619, 160x160 OLED */
+static const uint8_t u8x8_d_sh1108_160x160_noname_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+    
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x060),		/* clock divide ratio and oscillator frequency */
+  U8X8_CA(0x0a9, 0x003), 		/* set display resolution, 0=64x160, 1=96x160, 2=128x160, 3=160x160 */
+  U8X8_C(0x020),		                /* use page addressing mode */
+  U8X8_CA(0x081, 0x01f), 		/* set contrast control */
+  U8X8_CA(0x0ad, 0x80),			/* DC/DC control 80=Use external Vpp, 89=Use internal DC/DC*/
+  U8X8_C(0x030),				/* set discharge VSL level, 0x030..0x03f */
+  U8X8_CA(0x0d9, 0x028), 		/* pre-charge period */
+  U8X8_CA(0x0db, 0x035), 		/* vcomh deselect level */    
+  U8X8_CA(0x0dc, 0x035),		/* VSEGM Deselect Level */
+
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_sh1108_160x160_noname_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 60,
+  /* pre_chip_disable_wait_ns = */ 120,
+  /* reset_pulse_width_ms = */ 100, 	/* sh1108: 3 us */
+  /* post_reset_wait_ms = */ 100, /* sometimes OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 100,		/* sh1108: 100ns */
+  /* sck_pulse_width_ns = */ 100,	/* sh1108: 100ns */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* sh1108: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 20,
+  /* tile_height = */ 20,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 160,
+  /* pixel_height = */ 160
+};
+
+uint8_t u8x8_d_sh1108_160x160(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_sh1108_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1108_160x160_noname_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1108_160x160_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*==================================================*/

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_sh1122.c

@@ -0,0 +1,287 @@
+/*
+
+  u8x8_d_sh1122.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  Copied from sh1122 mostly because of the similar RAM architecture.
+  However: Commands are very different!
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_sh1122_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* sh1122: display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1122_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* sh1122: display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+
+/*
+  input:
+    one tile (8 Bytes)
+  output:
+    Tile for SH1122 (32 Bytes)
+*/
+
+/*
+static uint8_t u8x8_sh1122_to32_dest_buf[32];
+
+static uint8_t *u8x8_sh1122_8to32(U8X8_UNUSED u8x8_t *u8x8, uint8_t *ptr)
+{
+  uint8_t v;
+  uint8_t a,b;
+  uint8_t i, j;
+  uint8_t *dest;
+  
+  for( j = 0; j < 4; j++ )
+  {
+    dest = u8x8_sh1122_to32_dest_buf;
+    dest += j;
+    a =*ptr;
+    ptr++;
+    b = *ptr;
+    ptr++;
+    for( i = 0; i < 8; i++ )
+    {
+      v = 0;
+      if ( a&1 ) v |= 0xf0;
+      if ( b&1 ) v |= 0x0f;
+      *dest = v;
+      dest+=4;
+      a >>= 1;
+      b >>= 1;
+    }
+  }
+  
+  return u8x8_sh1122_to32_dest_buf;
+}
+*/
+
+
+static uint8_t u8x8_write_byte_to_16gr_device(u8x8_t *u8x8, uint8_t b)
+{
+  static uint8_t buf[4];
+  static uint8_t map[4] = { 0, 0x00f, 0x0f0, 0x0ff };
+  buf [3] = map[b & 3];
+  b>>=2;
+  buf [2] = map[b & 3];
+  b>>=2;
+  buf [1] = map[b & 3];
+  b>>=2;
+  buf [0] = map[b & 3];
+  return u8x8_cad_SendData(u8x8, 4, buf);
+}
+
+uint8_t u8x8_d_sh1122_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x; 
+  uint8_t y, c, i;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
+    /*
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1122_256x64_init_seq);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1122_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1122_powersave1_seq);
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* sh1122 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 2;		// only every 4th col can be addressed
+      x += u8x8->x_offset;		
+    
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y *= 8;
+          
+      
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;	/* data ptr to the tiles */
+      for( i = 0; i < 8; i++ )
+      {
+	u8x8_cad_SendCmd(u8x8, 0x0b0 );	/* set row address */
+	u8x8_cad_SendArg(u8x8, y);
+	u8x8_cad_SendCmd(u8x8, x & 15 );	/* lower 4 bit*/
+	u8x8_cad_SendCmd(u8x8, 0x010 | (x >> 4) );	/* higher 3 bit */	  
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+
+	while (  c > 0 )
+	{
+	  u8x8_write_byte_to_16gr_device(u8x8, *ptr);
+	  c--;
+	  ptr++;
+	}
+	y++;
+      }
+
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=========================================================*/
+
+static const uint8_t u8x8_d_sh1122_256x64_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),		/* remap */
+  U8X8_C(0x0c8),		/* remap */
+  U8X8_C(0x060),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_sh1122_256x64_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),		/* remap */
+  U8X8_C(0x0c0),		/* remap */
+  U8X8_C(0x040),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_sh1122_256x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 10, 	/* sh1122: 10 us */
+  /* post_reset_wait_ms = */ 20, 	/* */
+  /* sda_setup_time_ns = */ 125,		/* sh1122: cycle time is 250ns, so use 250/2 */
+  /* sck_pulse_width_ns = */ 125,	/* sh1122: cycle time is 250ns, so use 250/2 */
+  /* sck_clock_hz = */ 40000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns  */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 10,
+  /* write_pulse_width_ns = */ 150,	/* sh1122: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 32,		/* 256 pixel, so we require 32 bytes for this */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,	/* this is the byte offset (there are two pixel per byte with 4 bit per pixel) */
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 256,
+  /* pixel_height = */ 64
+};
+
+
+static const uint8_t u8x8_d_sh1122_256x64_init_seq[] = {
+    
+  U8X8_DLY(1),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(1),
+  
+  U8X8_C(0xae),		                /* display off */
+  U8X8_C(0x40),				/* display start line */  
+  U8X8_C(0x0a0),		/* remap */
+  U8X8_C(0x0c0),		/* remap */
+  U8X8_CA(0x81, 0x80),			/* set display contrast  */  
+  U8X8_CA(0xa8, 0x3f),			/* multiplex ratio 1/64 Duty (0x0F~0x3F) */  
+  U8X8_CA(0xad, 0x81),			/* use buildin DC-DC with 0.6 * 500 kHz */  
+  
+  U8X8_CA(0xd5, 0x50),			/* set display clock divide ratio (lower 4 bit)/oscillator frequency (upper 4 bit)  */  
+  U8X8_CA(0xd3, 0x00),			/* display offset, shift mapping ram counter */  
+  U8X8_CA(0xd9, 0x22),			/* pre charge (lower 4 bit) and discharge(higher 4 bit) period */  
+  U8X8_CA(0xdb, 0x35),			/* VCOM deselect level */  
+  U8X8_CA(0xdc, 0x35),			/* Pre Charge output voltage */  
+  U8X8_C(0x030),				/* discharge level */
+
+  U8X8_DLY(1),					/* delay  */
+
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_sh1122_256x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1122_256x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1122_256x64_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1122_256x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_sh1122_256x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+    
+    default:
+      return u8x8_d_sh1122_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1305.c

@@ -0,0 +1,323 @@
+/*
+
+  u8x8_d_ssd1305.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_ssd1305_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1305_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1305_128x32_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0d3, 32),			/* display offset to 32 */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1305_128x32_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0d3, 0),			/* display offset to  */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+static uint8_t u8x8_d_ssd1305_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+    
+      u8x8_cad_SendCmd(u8x8, 0x040 );	/* set line offset to 0 */
+    
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendArg(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendArg(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos)   );
+
+    
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	/*
+	do
+	{
+	  u8x8_cad_SendData(u8x8, 8, ptr);
+	  ptr += 8;
+	  c--;
+	} while( c > 0 );
+	*/
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_powersave1_seq);
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1305 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/* timing from SSD1306 */
+static const u8x8_display_info_t u8x8_ssd1305_128x32_noname_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 2,
+  /* flipmode_x_offset = */ 2,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 32
+};
+
+
+static const uint8_t u8x8_d_ssd1305_128x32_noname_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio */
+  U8X8_CA(0x0d3, 32),			/* display offset to 32 */
+  U8X8_C(0x040),		        	/* set display start line to 0 */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+
+  U8X8_CA(0x081, 0x0cf), 		/* [2] set contrast control */
+  U8X8_CA(0x0d9, 0x0f1), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x040), 		/* vcomh deselect level */  
+  // if vcomh is 0, then this will give the biggest range for contrast control issue #98
+  // restored the old values for the noname constructor, because vcomh=0 will not work for all OLEDs, #116
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1305_128x32_noname(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_ssd1305_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_128x32_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_128x32_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_128x32_noname_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1305_128x32_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*================================================*/
+/* adafruit SSD1305 OLED */
+
+/* timing from SSD1306 */
+static const u8x8_display_info_t u8x8_ssd1305_128x64_adafruit_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 2,
+  /* flipmode_x_offset = */ 2,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+
+static const uint8_t u8x8_d_ssd1305_128x64_adafruit_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x0f0),		/* clock divide ratio (0x00=1) and oscillator frequency */
+  U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio */
+  U8X8_CA(0x0d3, 0x040),		/* display offset to 32 */
+  U8X8_C(0x040),		        	/* set display start line to 0 */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+
+  U8X8_CA(0x081, 0x032), 		/* [2] set contrast control */
+  U8X8_CA(0x082, 0x080), 		/* set area brightness (reset=0x080) */
+  U8X8_CA(0x0d9, 0x0f1), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x040), 		/* vcomh deselect level */  
+  // if vcomh is 0, then this will give the biggest range for contrast control issue #98
+  // restored the old values for the noname constructor, because vcomh=0 will not work for all OLEDs, #116
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1305_128x64_adafruit(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_ssd1305_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_128x32_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_128x32_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1305_128x64_adafruit_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1305_128x64_adafruit_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1306_128x32.c

@@ -0,0 +1,214 @@
+/*
+
+  u8x8_d_ssd1306_128x32.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+/* UG-2832HSWEG02 Datasheet, Section 4.4 */
+static const uint8_t u8x8_d_ssd1306_128x32_univision_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x01f),		/* multiplex ratio */
+  U8X8_CA(0x0d3, 0x000),		/* display offset */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x002),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+  U8X8_CA(0x081, 0x08f),		/* [2] set contrast control */
+  U8X8_CA(0x0d9, 0x0f1),		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x040),		/* vcomh deselect level */
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_128x32_univision_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_128x32_univision_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_128x32_univision_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_128x32_univision_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_ssd1306_128x32_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_128x32_univision_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x32_univision_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x32_univision_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x32_univision_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x32_univision_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x32_univision_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	/*
+	do
+	{
+	  u8x8_cad_SendData(u8x8, 8, ptr);
+	  ptr += 8;
+	  c--;
+	} while( c > 0 );
+	*/
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ssd1306_128x32_univision_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 32
+};
+
+uint8_t u8x8_d_ssd1306_128x32_univision(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_128x32_univision_display_info);
+      return 1;
+    }
+    return u8x8_d_ssd1306_128x32_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1306_128x64_noname.c

@@ -0,0 +1,465 @@
+/*
+
+  u8x8_d_ssd1306_128x64_noname.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+/* more or less generic setup of all these small OLEDs */
+static const uint8_t u8x8_d_ssd1306_128x64_noname_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio */
+  U8X8_CA(0x0d3, 0x000),		/* display offset */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, SSD1306 only, should be removed for SH1106 */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+
+  U8X8_CA(0x081, 0x0cf), 		/* [2] set contrast control */
+  U8X8_CA(0x0d9, 0x0f1), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x040), 		/* vcomh deselect level */  
+  // if vcomh is 0, then this will give the biggest range for contrast control issue #98
+  // restored the old values for the noname constructor, because vcomh=0 will not work for all OLEDs, #116
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+/* this setup maximizes the brightness range, that can be set with setContrast() */
+/* Drawback: VCOMH deselect level is set to 0, which das not work so good with all OLEDs, issue #116 */
+static const uint8_t u8x8_d_ssd1306_128x64_vcomh0_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio */
+  U8X8_CA(0x0d3, 0x000),		/* display offset */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+  U8X8_CA(0x081, 0x0ef),		/* [2] set contrast control,  */
+  U8X8_CA(0x0d9, 0x0a1),		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x000),		/* vcomh deselect level 0x000 .. 0x070, low nibble always 0 */
+  // if vcomh is 0, then this will give the biggest range for contrast control issue #98
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+/* same as u8x8_d_ssd1306_128x64_noname_init_seq, but 0x0da bit 4 is set to 0 */
+/* this will disable the alternative COM configuration */
+static const uint8_t u8x8_d_ssd1306_128x64_alt0_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio */
+  U8X8_CA(0x0d3, 0x000),		/* display offset */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, SSD1306 only, should be removed for SH1106 */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x002),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+
+  U8X8_CA(0x081, 0x0cf), 		/* [2] set contrast control */
+  U8X8_CA(0x0d9, 0x0f1), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x040), 		/* vcomh deselect level */  
+  // if vcomh is 0, then this will give the biggest range for contrast control issue #98
+  // restored the old values for the noname constructor, because vcomh=0 will not work for all OLEDs, #116
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+/* issue 316: a special sh1106 setup, https://www.mikrocontroller.net/topic/431371?goto=5087807#5087807 */
+static const uint8_t u8x8_d_sh1106_128x64_winstar_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0xae),                 // Display OFF/ON: off (POR = 0xae)
+  U8X8_C(0xa4),                 // Set Entire Display OFF/ON: off (POR = 0xa4)
+  U8X8_CA(0xd5, 0x50),       // Divide Ratio/Oscillator FrequencyData Set: divide ratio = 1 (POR = 1), Oscillator Frequency = +/- 0% (POR = +/- 0%)
+  U8X8_CA(0xa8, 0x3f),       // Multiplex Ratio Data Set: 64 (POR = 0x3f, 64)
+  U8X8_CA(0xd3, 0x00),       // Display OffsetData Set: 0 (POR = 0x00)
+  U8X8_C(0x40),                 // Set Display Start Line: 0  
+  U8X8_CA(0xad, 0x8b),       // DC-DC ON/OFF Mode Set: Built-in DC-DC is used, Normal Display (POR = 0x8b)
+  U8X8_CA(0xd9, 0x22),       // Dis-charge/Pre-charge PeriodData Set: pre-charge 2 DCLKs, dis-charge 2 DCLKs (POR = 0x22, pre-charge 2 DCLKs, dis-charge 2 DCLKs)
+  U8X8_CA(0xdb, 0x35),       // VCOM Deselect LevelData Set: 0,770V (POR = 0x35, 0,770 V)
+  U8X8_C(0x32), // Set Pump voltage value: 8,0 V (POR = 0x32, 8,0 V)
+  U8X8_CA(0x81, 0xff),       // Contrast Data Register Set: 255 (large) (POR = 0x80)
+  U8X8_C(0x0a6),			// Set Normal/Reverse Display: normal (POR = 0xa6)
+  U8X8_CA(0x0da, 0x012),		// com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) 
+      
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const uint8_t u8x8_d_ssd1306_128x64_noname_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_128x64_noname_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_128x64_noname_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_128x64_noname_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_ssd1306_sh1106_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_128x64_noname_display_info);
+      break;
+    */
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_noname_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_noname_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_noname_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_noname_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_noname_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+    
+      u8x8_cad_SendCmd(u8x8, 0x040 );	/* set line offset to 0 */
+    
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendArg(u8x8, 0x000 | ((x&15)));					/* probably wrong, should be SendCmd */
+      u8x8_cad_SendArg(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));	/* probably wrong, should be SendCmd */
+
+    
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	/*
+	do
+	{
+	  u8x8_cad_SendData(u8x8, 8, ptr);
+	  ptr += 8;
+	  c--;
+	} while( c > 0 );
+	*/
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ssd1306_128x64_noname_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* ==> i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_ssd1306_128x64_noname(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_ssd1306_sh1106_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_noname_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_128x64_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+uint8_t u8x8_d_ssd1306_128x64_vcomh0(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_ssd1306_sh1106_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_vcomh0_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_128x64_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+uint8_t u8x8_d_ssd1306_128x64_alt0(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  
+  if ( u8x8_d_ssd1306_sh1106_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_alt0_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_128x64_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_sh1106_128x64_noname_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+  /* spi_mode = */ 3,		/* active low (clock is high by default), rising edge, this seems to be a difference to the ssd1306 */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 2,
+  /* flipmode_x_offset = */ 2,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_sh1106_128x64_noname(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  if ( u8x8_d_ssd1306_sh1106_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      /* maybe use a better init sequence */
+      /* https://www.mikrocontroller.net/topic/431371 */
+      /* the new sequence is added in the winstar constructor (see below), this is kept untouched */
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_noname_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1106_128x64_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+    
+}
+
+uint8_t u8x8_d_sh1106_128x64_vcomh0(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  if ( u8x8_d_ssd1306_sh1106_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_128x64_vcomh0_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1106_128x64_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+    
+}
+
+uint8_t u8x8_d_sh1106_128x64_winstar(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  if ( u8x8_d_ssd1306_sh1106_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_sh1106_128x64_winstar_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_sh1106_128x64_noname_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+    
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1306_48x64.c

@@ -0,0 +1,215 @@
+/*
+
+ u8x8_d_ssd1306_48x64_winstar.c
+
+ Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+ Copyright (c) 2016, olikraus@gmail.com
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this list
+ of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice, this
+ list of conditions and the following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ */
+#include "u8x8.h"
+
+/* Winstar 0.71 OLED */
+static const uint8_t u8x8_d_ssd1306_48x64_winstar_init_seq[] =
+{
+
+U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
+
+    U8X8_C(0x0ae), /* display off */
+    U8X8_CA(0x0d5, 0x080), /* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+    U8X8_CA(0x0a8, 0x03f), /* multiplex ratio, 0.71 OLED: changed from 0x2f to 0x3f */
+    U8X8_CA(0x0d3, 0x000), /* display offset, 0.71 OLED  */
+    U8X8_C(0x040), /* set display start line to 0, 0.71 OLED */
+    U8X8_CA(0x08d, 0x014), /* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, 0.71 OLED  0x14*/
+
+    /// according to the datasheet, 0x00 is NOT page addressing mode, but horizontal addressing mode;
+    /// so it looks like u8g2 expects horizontal addressing (and the inline comment is wrong) while the Winstar example
+    /// actually uses page addressing (which is the reset default)
+    U8X8_CA(0x020, 0x000), /* page addressing mode */
+
+    U8X8_C(0x0a1), /* segment remap a0/a1, 0.71 OLED  */
+    U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse, 0.71 OLED  */
+    // Flipmode
+    // U8X8_C(0x0a0),       /* segment remap a0/a1*/
+    // U8X8_C(0x0c0),       /* c0: scan dir normal, c8: reverse */
+
+    U8X8_CA(0x0da, 0x012), /* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), 0.71 OLED */
+    U8X8_CA(0x081, 0x07f), /* [2] set contrast control, 0.71 OLED datasheet: 0x7f */
+    U8X8_CA(0x0d9, 0x022), /* [2] pre-charge period 0x022/f1, 0.71 OLED datasheet: 0x22 */
+    U8X8_CA(0x0db, 0x040), /* vcomh deselect level, 0.71 OLED datasheet: 0x40 */
+
+    // U8X8_C(0x02e),        /* Deactivate scroll */
+    U8X8_C(0x0a4), /* output ram to display */
+    U8X8_C(0x0a6), /* none inverted normal display mode */
+
+    U8X8_END_TRANSFER(), /* disable chip */
+    U8X8_END() /* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_48x64_powersave0_seq[] =
+{
+U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
+U8X8_C(0x0af), /* display on */
+U8X8_END_TRANSFER(), /* disable chip */
+U8X8_END() /* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_48x64_powersave1_seq[] =
+{
+U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
+U8X8_C(0x0ae), /* display off */
+U8X8_END_TRANSFER(), /* disable chip */
+U8X8_END() /* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_48x64_flip0_seq[] =
+{
+U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
+U8X8_C(0x0a1), /* segment remap a0/a1*/
+U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse */
+U8X8_END_TRANSFER(), /* disable chip */
+U8X8_END() /* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_48x64_flip1_seq[] =
+{
+U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
+U8X8_C(0x0a0), /* segment remap a0/a1*/
+U8X8_C(0x0c0), /* c0: scan dir normal, c8: reverse */
+U8X8_END_TRANSFER(), /* disable chip */
+U8X8_END() /* end of sequence */
+};
+
+static uint8_t u8x8_d_ssd1306_48x64_generic(u8x8_t *u8x8, uint8_t msg,
+    uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch (msg)
+  {
+    /* handled by the calling function
+     case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+     u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_48x64_display_info);
+     break;
+     case U8X8_MSG_DISPLAY_INIT:
+     u8x8_d_helper_display_init(u8x8);
+     u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_48x64_winstar_init_seq);
+     break;
+     */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if (arg_int == 0)
+        u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_48x64_powersave0_seq);
+      else
+        u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_48x64_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if (arg_int == 0)
+      {
+        u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_48x64_flip0_seq);
+        u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+        u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_48x64_flip1_seq);
+        u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081);
+      u8x8_cad_SendArg(u8x8, arg_int); /* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *) arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x >> 4));
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x & 15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *) arg_ptr)->y_pos));
+
+      do
+      {
+        c = ((u8x8_tile_t *) arg_ptr)->cnt;
+        ptr = ((u8x8_tile_t *) arg_ptr)->tile_ptr;
+        u8x8_cad_SendData(u8x8, c * 8, ptr); /* note: SendData can not handle more than 255 bytes */
+        arg_int--;
+      } while (arg_int > 0);
+
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+static const u8x8_display_info_t u8x8_ssd1306_48x64_display_info =
+{
+/* chip_enable_level = */0,
+/* chip_disable_level = */1,
+
+/* post_chip_enable_wait_ns = */20,
+/* pre_chip_disable_wait_ns = */10,
+/* reset_pulse_width_ms = */100, /* SSD1306: 3 us */
+/* post_reset_wait_ms = */100, /* far east OLEDs need much longer setup time */
+/* sda_setup_time_ns = */50, /* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+/* sck_pulse_width_ns = */50, /* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+/* sck_clock_hz = */8000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+/* spi_mode = */0, /* active high, rising edge */
+/* i2c_bus_clock_100kHz = */4,
+/* data_setup_time_ns = */40,
+/* write_pulse_width_ns = */150, /* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+/* tile_width = */6,
+/* tile_height = */8,
+/* default_x_offset = */40,
+/* flipmode_x_offset = */40,
+/* pixel_width = */48,
+/* pixel_height = */64 };
+
+/* Winstar 0.71" OLED */
+uint8_t u8x8_d_ssd1306_48x64_winstar(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int,
+    void *arg_ptr)
+{
+  if (msg == U8X8_MSG_DISPLAY_SETUP_MEMORY)
+  {
+    u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_48x64_display_info);
+    return 1;
+  }
+  else if (msg == U8X8_MSG_DISPLAY_INIT)
+  {
+    u8x8_d_helper_display_init(u8x8);
+    u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_48x64_winstar_init_seq);
+    return 1;
+  }
+  return u8x8_d_ssd1306_48x64_generic(u8x8, msg, arg_int, arg_ptr);
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1306_64x32.c

@@ -0,0 +1,258 @@
+/*
+
+  u8x8_d_ssd1306_64x32.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_ssd1306_64x32_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_64x32_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_64x32_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_64x32_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_ssd1306_64x32_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_64x32_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x32_noname_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x32_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x32_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x32_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x32_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*======================================================*/
+
+static const u8x8_display_info_t u8x8_ssd1306_64x32_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 8,
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 32,
+  /* flipmode_x_offset = */ 32,
+  /* pixel_width = */ 64,
+  /* pixel_height = */ 32
+};
+
+
+/*======================================================*/
+
+static const uint8_t u8x8_d_ssd1306_64x32_noname_init_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x02f),		/* multiplex ratio: changed from 0x1f to 0x2f */
+  U8X8_CA(0x0d3, 0x000),		/* display offset */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1 */
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+  U8X8_CA(0x081, 0x0cf),		/* [2] set contrast control datasheet: 0xcf */
+  U8X8_CA(0x0d9, 0x022),		/* [2] pre-charge period 0x022/f1 */
+  U8X8_CA(0x0db, 0x000),		/* vcomh deselect level */
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_ssd1306_64x32_noname(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_64x32_display_info);
+      return 1;
+    }
+    else if ( msg == U8X8_MSG_DISPLAY_INIT )
+    {
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x32_noname_init_seq);    
+      return 1;
+    }
+    return u8x8_d_ssd1306_64x32_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+
+/*======================================================*/
+
+static const uint8_t u8x8_d_ssd1306_64x32_1f_init_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+    
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x01f),		/* multiplex ratio: changed from 0x1f to 0x2f, 23 Sep 17: changed back to 1f */
+  U8X8_CA(0x0d3, 0x000),		/* display offset */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable */
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1 */
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+  U8X8_CA(0x081, 0x0cf),		/* [2] set contrast control datasheet: 0xcf */
+  U8X8_CA(0x0d9, 0x022),		/* [2] pre-charge period 0x022/f1 */
+  U8X8_CA(0x0db, 0x000),		/* vcomh deselect level */
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_ssd1306_64x32_1f(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_64x32_display_info);
+      return 1;
+    }
+    else if ( msg == U8X8_MSG_DISPLAY_INIT )
+    {
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x32_1f_init_seq);    
+      return 1;
+    }
+    return u8x8_d_ssd1306_64x32_generic(u8x8, msg, arg_int, arg_ptr);
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1306_64x48.c

@@ -0,0 +1,213 @@
+/*
+
+  u8x8_d_ssd1306_64x48.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+/* EastRising 0.66 OLED */
+static const uint8_t u8x8_d_ssd1306_64x48_er_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x02f),		/* multiplex ratio, 0.66 OLED: changed from 0x1f to 0x2f */
+  U8X8_CA(0x0d3, 0x000),		/* display offset, 0.66 OLED  */
+  U8X8_C(0x040),		                /* set display start line to 0, 0.66 OLED */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, 0.66 OLED  0x14*/
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1, 0.66 OLED  */
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse, 0.66 OLED  */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), 0.66 OLED */
+  U8X8_CA(0x081, 0x0cf),		/* [2] set contrast control, 0.66 OLED datasheet: 0xcf */
+  U8X8_CA(0x0d9, 0x022),		/* [2] pre-charge period 0x022/f1, 0.66 OLED datasheet: 0x22 */
+  U8X8_CA(0x0db, 0x000),		/* vcomh deselect level, 0.66 OLED datasheet: 0x00 */
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_64x48_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_64x48_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_64x48_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_64x48_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_ssd1306_64x48_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_64x48_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_er_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ssd1306_64x48_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 8,
+  /* tile_hight = */ 6,
+  /* default_x_offset = */ 32,
+  /* flipmode_x_offset = */ 32,
+  /* pixel_width = */ 64,
+  /* pixel_height = */ 48
+};
+
+/* East Rising 0.66" OLED */
+uint8_t u8x8_d_ssd1306_64x48_er(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_64x48_display_info);
+      return 1;
+    }
+    else if ( msg == U8X8_MSG_DISPLAY_INIT )
+    {
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_er_init_seq);    
+      return 1;
+    }
+    return u8x8_d_ssd1306_64x48_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1306_96x16.c

@@ -0,0 +1,213 @@
+/*
+
+  u8x8_d_ssd1306_96x16.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+/* EastRising 0.69 OLED */
+static const uint8_t u8x8_d_ssd1306_96x16_er_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x080),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  U8X8_CA(0x0a8, 0x00f),		/* multiplex ratio, 0.69 OLED: 0x0f */
+  U8X8_CA(0x0d3, 0x000),		/* display offset, 0.69 OLED  */
+  U8X8_C(0x040),		                /* set display start line to 0, 0.69 OLED */
+  U8X8_CA(0x08d, 0x014),		/* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, 0.66 OLED  0x14*/
+  U8X8_CA(0x020, 0x000),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1, 0.66 OLED  */
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse, 0.66 OLED  */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x002),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), 0.66 OLED */
+  U8X8_CA(0x081, 0x0af),		/* [2] set contrast control, 0.69 OLED datasheet: 0xaf */
+  U8X8_CA(0x0d9, 0x0f1),		/* [2] pre-charge period 0x0f1, 0.69 OLED datasheet: 0xf1 */
+  U8X8_CA(0x0db, 0x020),		/* vcomh deselect level, 0.69 OLED datasheet: 0x20 */
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_96x16_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_96x16_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_96x16_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1306_96x16_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static uint8_t u8x8_d_ssd1306_96x16_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_96x16_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_96x16_er_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_96x16_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_96x16_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_96x16_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_96x16_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1306 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ssd1306_96x16_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, 	/* OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 12,
+  /* tile_hight = */ 2,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 32,
+  /* pixel_width = */ 96,
+  /* pixel_height = */ 16
+};
+
+/* East Rising 0.69" OLED */
+uint8_t u8x8_d_ssd1306_96x16_er(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_96x16_display_info);
+      return 1;
+    }
+    else if ( msg == U8X8_MSG_DISPLAY_INIT )
+    {
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_96x16_er_init_seq);    
+      return 1;
+    }
+    return u8x8_d_ssd1306_96x16_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1309.c

@@ -0,0 +1,287 @@
+/*
+
+  u8x8_d_ssd1309.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_ssd1309_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1309_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1309_128x64_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1309_128x64_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+static uint8_t u8x8_d_ssd1309_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      x += u8x8->x_offset;
+    
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendArg(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendArg(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos)   );
+
+    
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	/*
+	do
+	{
+	  u8x8_cad_SendData(u8x8, 8, ptr);
+	  ptr += 8;
+	  c--;
+	} while( c > 0 );
+	*/
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_powersave1_seq);
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1309 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=================================================*/
+/* offset 2 version */
+
+/* timing from SSD1306 */
+static const u8x8_display_info_t u8x8_ssd1309_128x64_noname2_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 2,
+  /* flipmode_x_offset = */ 2,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+
+static const uint8_t u8x8_d_ssd1309_128x64_noname_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0d5, 0x0a0),		/* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
+  //U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio */
+  U8X8_C(0x040),		        	/* set display start line to 0 */
+  U8X8_CA(0x020, 0x002),		/* page addressing mode */
+  
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  // Flipmode
+  // U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  // U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  
+  U8X8_CA(0x0da, 0x012),		/* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */
+
+  U8X8_CA(0x081, 0x06f), 		/* [2] set contrast control */
+  U8X8_CA(0x0d9, 0x0d3), 		/* [2] pre-charge period 0x022/f1*/
+  U8X8_CA(0x0db, 0x020), 		/* vcomh deselect level */  
+  // if vcomh is 0, then this will give the biggest range for contrast control issue #98
+  // restored the old values for the noname constructor, because vcomh=0 will not work for all OLEDs, #116
+  
+  U8X8_C(0x02e),				/* Deactivate scroll */ 
+  U8X8_C(0x0a4),				/* output ram to display */
+  U8X8_C(0x0a6),				/* none inverted normal display mode */
+  
+  //U8X8_C(0x0af),		                /* display on */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1309_128x64_noname2(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_ssd1309_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_128x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_128x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_128x64_noname_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1309_128x64_noname2_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/*=================================================*/
+/* offset 0 version */
+
+/* timing from SSD1306 */
+static const u8x8_display_info_t u8x8_ssd1309_128x64_noname0_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1306: 3 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_ssd1309_128x64_noname0(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    
+  if ( u8x8_d_ssd1309_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_128x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_128x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1309_128x64_noname_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1309_128x64_noname0_display_info);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1322.c

@@ -0,0 +1,530 @@
+/*
+
+  u8x8_d_ssd1322.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_ssd1322_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* ssd1322: display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1322_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* ssd1322: display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+/* interpret b as a monochrome bit pattern, write value 15 for high bit and value 0 for a low bit */
+/* topbit (msb) is sent last */
+/* example: b = 0x083 will send 0xff, 0x00, 0x00, 0xf0 */
+
+/* 4 Jan 2017: I think this procedure not required any more. Delete? */
+/*
+static uint8_t u8x8_write_byte_to_16gr_device(u8x8_t *u8x8, uint8_t b)
+{
+  static uint8_t buf[4];
+  static uint8_t map[4] = { 0, 0x00f, 0x0f0, 0x0ff };
+  buf [3] = map[b & 3];
+  b>>=2;
+  buf [2] = map[b & 3];
+  b>>=2;
+  buf [1] = map[b & 3];
+  b>>=2;
+  buf [0] = map[b & 3];
+  return u8x8_cad_SendData(u8x8, 4, buf);
+}
+*/
+
+
+/*
+  input:
+    one tile (8 Bytes)
+  output:
+    Tile for SSD1325 (32 Bytes)
+*/
+
+static uint8_t u8x8_ssd1322_to32_dest_buf[32];
+
+static uint8_t *u8x8_ssd1322_8to32(U8X8_UNUSED u8x8_t *u8x8, uint8_t *ptr)
+{
+  uint8_t v;
+  uint8_t a,b;
+  uint8_t i, j;
+  uint8_t *dest;
+  
+  for( j = 0; j < 4; j++ )
+  {
+    dest = u8x8_ssd1322_to32_dest_buf;
+    dest += j;
+    a =*ptr;
+    ptr++;
+    b = *ptr;
+    ptr++;
+    for( i = 0; i < 8; i++ )
+    {
+      v = 0;
+      if ( a&1 ) v |= 0xf0;
+      if ( b&1 ) v |= 0x0f;
+      *dest = v;
+      dest+=4;
+      a >>= 1;
+      b >>= 1;
+    }
+  }
+  
+  return u8x8_ssd1322_to32_dest_buf;
+}
+
+static uint8_t *u8x8_ssd1322_4to32(U8X8_UNUSED u8x8_t *u8x8, uint8_t *ptr)
+{
+  uint8_t v;
+  uint8_t a;
+  uint8_t i, j;
+  uint8_t *dest;
+  
+  for( j = 0; j < 4; j++ )
+  {
+    dest = u8x8_ssd1322_to32_dest_buf;
+    dest += j;
+    a =*ptr;
+    ptr++;
+    for( i = 0; i < 8; i++ )
+    {
+      v = 0;
+      if ( a&1 ) v = 0xff;
+      *dest = v;
+      dest+=4;
+      a >>= 1;
+    }
+  }
+  
+  return u8x8_ssd1322_to32_dest_buf;
+}
+
+
+uint8_t u8x8_d_ssd1322_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x; 
+  uint8_t y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
+    /*
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_256x64_init_seq);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_powersave1_seq);
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x0C1 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1322 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 2;		// only every 4th col can be addressed
+      x += u8x8->x_offset;		
+    
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y *= 8;
+    
+      
+      u8x8_cad_SendCmd(u8x8, 0x075 );	/* set row address, moved out of the loop (issue 302) */
+      u8x8_cad_SendArg(u8x8, y);
+      u8x8_cad_SendArg(u8x8, y+7);
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+
+	do
+	{
+	  u8x8_cad_SendCmd(u8x8, 0x015 );	/* set column address */
+	  u8x8_cad_SendArg(u8x8, x );	/* start */
+	  u8x8_cad_SendArg(u8x8, x+1 );	/* end */
+
+	  u8x8_cad_SendCmd(u8x8, 0x05c );	/* write to ram */
+	  
+	  u8x8_cad_SendData(u8x8, 32, u8x8_ssd1322_8to32(u8x8, ptr));
+	  
+	  ptr += 8;
+	  x += 2;
+	  c--;
+	} while( c > 0 );
+	
+	//x += 2;
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=========================================================*/
+
+static const uint8_t u8x8_d_ssd1322_256x64_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CAA(0x0a0, 0x006, 0x011),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1322_256x64_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CAA(0x0a0, 0x014, 0x011),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_ssd1322_256x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1322: 2 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1322: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1322: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 10000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215), 10 MHz (issue 301) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 10,
+  /* write_pulse_width_ns = */ 150,	/* SSD1322: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 32,		/* 256 pixel, so we require 32 bytes for this */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0x01c,	/* this is the byte offset (there are two pixel per byte with 4 bit per pixel) */
+  /* flipmode_x_offset = */ 0x01c,
+  /* pixel_width = */ 256,
+  /* pixel_height = */ 64
+};
+
+
+static const uint8_t u8x8_d_ssd1322_256x64_init_seq[] = {
+    
+  U8X8_DLY(1),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(1),
+  
+  U8X8_CA(0xfd, 0x12),            	/* unlock */
+  U8X8_C(0xae),		                /* display off */
+  U8X8_CA(0xb3, 0x91),			/* set display clock divide ratio/oscillator frequency (set clock as 80 frames/sec)  */  
+  U8X8_CA(0xca, 0x3f),			/* multiplex ratio 1/64 Duty (0x0F~0x3F) */  
+  U8X8_CA(0xa2, 0x00),			/* display offset, shift mapping ram counter */  
+  U8X8_CA(0xa1, 0x00),			/* display start line */  
+  //U8X8_CAA(0xa0, 0x14, 0x11),	/* Set Re-Map / Dual COM Line Mode */  
+  U8X8_CAA(0xa0, 0x06, 0x011),	/* Set Re-Map / Dual COM Line Mode */  
+  U8X8_CA(0xab, 0x01),			/* Enable Internal VDD Regulator */  
+  U8X8_CAA(0xb4, 0xa0, 0x005|0x0fd),	/* Display Enhancement A */  
+  U8X8_CA(0xc1, 0x9f),			/* contrast */  
+  U8X8_CA(0xc7, 0x0f),			/* Set Scale Factor of Segment Output Current Control */  
+  U8X8_C(0xb9),		                /* linear grayscale */
+  U8X8_CA(0xb1, 0xe2),			/* Phase 1 (Reset) & Phase 2 (Pre-Charge) Period Adjustment */  
+  U8X8_CAA(0xd1, 0x082|0x020, 0x020),	/* Display Enhancement B */  
+  U8X8_CA(0xbb, 0x1f),			/* precharge  voltage */  
+  U8X8_CA(0xb6, 0x08),			/* precharge  period */  
+  U8X8_CA(0xbe, 0x07),			/* vcomh */  
+  U8X8_C(0xa6),		                /* normal display */
+  U8X8_C(0xa9),		                /* exit partial display */
+
+
+  U8X8_DLY(1),					/* delay 2ms */
+
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1322_nhd_256x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1322_256x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_256x64_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_256x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_256x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+    
+    default:
+      return u8x8_d_ssd1322_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+/*=========================================================*/
+/* 
+  NHD-2.7-12864WDW3-M 
+  http://www.newhavendisplay.com/nhd2712864wdw3m-p-9546.html
+  http://www.newhavendisplay.com/specs/NHD-2.7-12864WDW3-M.pdf
+
+  It looks like that only every second pixel is connected to the OLED
+*/
+
+uint8_t u8x8_d_ssd1322_common2(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x; 
+  uint8_t y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
+    /*
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_256x64_init_seq);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_powersave1_seq);
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x0C1 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1322 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 2;		// only every 4th col can be addressed
+      x *= 2;		// only every second pixel is used in the 128x64 NHD OLED 
+    
+      x += u8x8->x_offset;
+    
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y *= 8;
+          
+      u8x8_cad_SendCmd(u8x8, 0x075 );	/* set row address, moved out of the loop (issue 302) */
+      u8x8_cad_SendArg(u8x8, y);
+      u8x8_cad_SendArg(u8x8, y+7);
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+
+	do
+	{
+	  u8x8_cad_SendCmd(u8x8, 0x015 );	/* set column address */
+	  u8x8_cad_SendArg(u8x8, x );	/* start */
+	  u8x8_cad_SendArg(u8x8, x+1 );	/* end */
+	  u8x8_cad_SendCmd(u8x8, 0x05c );	/* write to ram */	  
+	  u8x8_cad_SendData(u8x8, 32, u8x8_ssd1322_4to32(u8x8, ptr));	  
+	  ptr += 4;
+	  x += 2;
+	  
+	  u8x8_cad_SendCmd(u8x8, 0x015 );	/* set column address */
+	  u8x8_cad_SendArg(u8x8, x );	/* start */
+	  u8x8_cad_SendArg(u8x8, x+1 );	/* end */
+	  u8x8_cad_SendCmd(u8x8, 0x05c );	/* write to ram */	  
+	  u8x8_cad_SendData(u8x8, 32, u8x8_ssd1322_4to32(u8x8, ptr));	  
+	  ptr += 4;
+	  x += 2;
+	  
+	  c--;
+	} while( c > 0 );
+	
+	//x += 2;
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const uint8_t u8x8_d_ssd1322_128x64_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CAA(0x0a0, 0x016, 0x011),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1322_128x64_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CAA(0x0a0, 0x004, 0x011),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_ssd1322_128x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	/* SSD1322: 2 us */
+  /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
+  /* sda_setup_time_ns = */ 50,		/* SSD1322: 15ns, but cycle time is 100ns, so use 100/2 */
+  /* sck_pulse_width_ns = */ 50,	/* SSD1322: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 10000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215), 10 MHz (issue 301) */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 10,
+  /* write_pulse_width_ns = */ 150,	/* SSD1322: cycle time is 300ns, so use 300/2 = 150 */
+  /* tile_width = */ 16,		/* 128 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 28,	/* this is the byte offset (there are two pixel per byte with 4 bit per pixel) */
+  /* flipmode_x_offset = */ 28,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+
+static const uint8_t u8x8_d_ssd1322_128x64_init_seq[] = {
+    
+  U8X8_DLY(1),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(1),
+  
+  U8X8_CA(0xfd, 0x12),            	/* unlock */
+  U8X8_C(0xae),		                /* display off */
+  U8X8_CA(0xb3, 0x91),			/* set display clock divide ratio/oscillator frequency (set clock as 80 frames/sec)  */  
+  U8X8_CA(0xca, 0x3f),			/* multiplex ratio 1/64 Duty (0x0F~0x3F) */  
+  U8X8_CA(0xa2, 0x00),			/* display offset, shift mapping ram counter */  
+
+  U8X8_CA(0xa1, 0x00),			/* display start line */  
+  U8X8_CA(0xab, 0x01),			/* Enable Internal VDD Regulator */  
+  //U8X8_CAA(0xa0, 0x14, 0x11),	/* Set Re-Map / Dual COM Line Mode */  
+  //U8X8_CAA(0xa0, 0x06, 0x011),	/* Set Re-Map / Dual COM Line Mode */  
+  U8X8_CAA(0xa0, 0x16, 0x011),	/* Set Re-Map / Dual COM Line Mode (NHD-2.7-12864WDW3-M datasheet) */  
+  U8X8_CA(0xc7, 0x0f),			/* Set Scale Factor of Segment Output Current Control */  
+  U8X8_CA(0xc1, 0x9f),			/* contrast */  
+  //U8X8_CA(0xb1, 0xe2),			/* Phase 1 (Reset) & Phase 2 (Pre-Charge) Period Adjustment */  
+  U8X8_CA(0xb1, 0xf2),			/* Phase 1 (Reset) & Phase 2 (Pre-Charge) Period Adjustment (NHD-2.7-12864WDW3-M datasheet) */  
+  U8X8_CA(0xbb, 0x1f),			/* precharge  voltage */    
+  //U8X8_CAA(0xb4, 0xa0, 0x005|0x0fd),	/* Display Enhancement A */  
+  U8X8_CAA(0xb4, 0xa0, 0x0fd),	/* Display Enhancement A (NHD-2.7-12864WDW3-M datasheet) */  
+  U8X8_CA(0xbe, 0x04),			/* vcomh (NHD-2.7-12864WDW3-M datasheet) */  
+  U8X8_C(0xb9),		                /* linear grayscale */
+  //U8X8_CAA(0xd1, 0x082|0x020, 0x020),	/* Display Enhancement B */  
+  //U8X8_CA(0xb6, 0x08),			/* precharge  period */  
+  U8X8_C(0xa6),		                /* normal display */
+  U8X8_C(0xa9),		                /* exit partial display */
+
+
+  U8X8_DLY(1),					/* delay 2ms */
+
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_ssd1322_nhd_128x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1322_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_128x64_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_128x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1322_128x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+    
+    default:
+      return u8x8_d_ssd1322_common2(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1325.c

@@ -0,0 +1,287 @@
+/*
+
+  u8x8_d_ssd1325.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+/* http://www.newhavendisplay.com/app_notes/OLED_2_7_12864.txt */
+static const uint8_t u8x8_d_ssd1325_128x64_nhd_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0b3, 0x091),		/* set display clock divide ratio/oscillator frequency (set clock as 135 frames/sec) */			
+  U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio: 0x03f * 1/64 duty */
+  U8X8_CA(0x0a2, 0x04c),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a1, 0x000),		/* display start line */
+  U8X8_CA(0x0ad, 0x002),		/* master configuration: disable embedded DC-DC, enable internal VCOMH */
+  U8X8_CA(0x0a0, 0x052),		/* remap configuration, horizontal address increment (bit 2 = 0), enable nibble remap (upper nibble is left, bit 1 = 1) */
+  U8X8_C(0x086),				/* full current range (0x084, 0x085, 0x086) */
+  U8X8_C(0x0b8),				/* set gray scale table */
+    U8X8_A(0x001),				/* */
+    U8X8_A(0x011),				/* */
+    U8X8_A(0x022),				/* */
+    U8X8_A(0x032),				/* */
+    U8X8_A(0x043),				/* */
+    U8X8_A(0x054),				/* */
+    U8X8_A(0x065),				/* */
+    U8X8_A(0x076),				/* */
+    
+  U8X8_CA(0x081, 0x070),		/* contrast, brightness, 0..128, Newhaven: 0x040 */
+  U8X8_CA(0x0b2, 0x051),		/* frame frequency (row period) */
+  U8X8_CA(0x0b1, 0x055),                    /* phase length */
+  U8X8_CA(0x0bc, 0x010),                    /* pre-charge voltage level */
+  U8X8_CA(0x0b4, 0x002),                    /* set pre-charge compensation level (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_CA(0x0b0, 0x028),                    /* enable pre-charge compensation (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_CA(0x0be, 0x01c),                     /* VCOMH voltage */
+  U8X8_CA(0x0bf, 0x002|0x00d),           /* VSL voltage level (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_C(0x0a4),				/* normal display mode */
+    
+  U8X8_CA(0x023, 0x003),		/* graphics accelleration: fill pixel */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1325_128x64_nhd_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1325_128x64_nhd_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1325_128x64_nhd_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a0, 0x052),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1325_128x64_nhd_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a0, 0x041),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+/*
+  input:
+    one tile (8 Bytes)
+  output:
+    Tile for SSD1325 (32 Bytes)
+*/
+
+static uint8_t u8x8_ssd1325_8to32_dest_buf[32];
+
+static uint8_t *u8x8_ssd1325_8to32(U8X8_UNUSED u8x8_t *u8x8, uint8_t *ptr)
+{
+  uint8_t v;
+  uint8_t a,b;
+  uint8_t i, j;
+  uint8_t *dest;
+  
+  for( j = 0; j < 4; j++ )
+  {
+    dest = u8x8_ssd1325_8to32_dest_buf;
+    dest += j;
+    a =*ptr;
+    ptr++;
+    b = *ptr;
+    ptr++;
+    for( i = 0; i < 8; i++ )
+    {
+      v = 0;
+      if ( a&1 ) v |= 0xf0;
+      if ( b&1 ) v |= 0x0f;
+      *dest = v;
+      dest+=4;
+      a >>= 1;
+      b >>= 1;
+    }
+  }
+  
+  return u8x8_ssd1325_8to32_dest_buf;
+}
+
+
+
+
+static uint8_t u8x8_d_ssd1325_128x64_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1325_128x64_nhd_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1325_128x64_nhd_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1325_128x64_nhd_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1325_128x64_nhd_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1325_128x64_nhd_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1325_128x64_nhd_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1325 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 4;
+    
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y *= 8;
+      y += u8x8->x_offset;		/* x_offset is used as y offset for the SSD1325 */
+    
+
+      u8x8_cad_SendCmd(u8x8, 0x075 );	/* set row address */
+      u8x8_cad_SendArg(u8x8, y);
+      u8x8_cad_SendArg(u8x8, y+7);
+    
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+
+	do
+	{
+	  if ( ptr[0] | ptr[1] | ptr[2] | ptr[3] | ptr[4] | ptr[5] | ptr[6] | ptr[7] )
+	  {
+	    /* draw the tile if pattern is not zero for all bytes */
+	    u8x8_cad_SendCmd(u8x8, 0x015 );	/* set column address */
+	    u8x8_cad_SendArg(u8x8, x );	/* start */
+	    u8x8_cad_SendArg(u8x8, x+3 );	/* end */
+
+	    
+	    
+	    u8x8_cad_SendData(u8x8, 32, u8x8_ssd1325_8to32(u8x8, ptr));
+	  }
+	  else
+	  {
+	    /* tile is empty, use the graphics acceleration command */
+	    u8x8_cad_SendCmd(u8x8, 0x024 );	// draw rectangle
+	    u8x8_cad_SendArg(u8x8, x );	
+	    u8x8_cad_SendArg(u8x8, y );	
+	    u8x8_cad_SendArg(u8x8, x+3 );	
+	    u8x8_cad_SendArg(u8x8, y+7 );	
+	    u8x8_cad_SendArg(u8x8, 0 );	// clear	    
+	  }
+	  ptr += 8;
+	  x += 4;
+	  c--;
+	} while( c > 0 );
+	
+	//x += 4;
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_nhd_ssd1325_128x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 		/**/
+  /* sda_setup_time_ns = */ 100,		/* SSD1325  */
+  /* sck_pulse_width_ns = */ 100,	/* SSD1325  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 60,	/* SSD1325 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,		/* x_offset is used as y offset for the SSD1325 */
+  /* flipmode_x_offset = */ 8,		/* x_offset is used as y offset for the SSD1325 */
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_ssd1325_nhd_128x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_nhd_ssd1325_128x64_display_info);
+      return 1;
+    }
+    return u8x8_d_ssd1325_128x64_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1326.c

@@ -0,0 +1,277 @@
+/*
+
+  u8x8_d_ssd1326.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+/* ER OLED */
+static const uint8_t u8x8_d_ssd1326_er_256x32_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_CA(0x0fd, 0x012),		/* unlock (not required, this is default by reset) */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0a8, 0x01f),		/* multiplex ratio: 0x03f * 1/64 duty - changed by CREESOO, acc. to datasheet, 100317*/ 
+  U8X8_CA(0x0a1, 0x000),		/* display start line */
+  U8X8_CA(0x0a2, 0x000),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0ad, 0x002),		/* master configuration: disable embedded DC-DC, enable internal VCOMH */
+  /*
+    a0 command: 0x0a0 ***abcde
+      a: 1: mono mode
+      b: 0: horizontal (1: vertical) address increment
+      c: 1: enable bit remap
+      d: 1: COM remap
+      e: 1: Column remap
+  */
+  U8X8_CA(0x0a0, 0x006),		/* remap configuration, see above */
+  U8X8_C(0x086),				/* full current range (0x084, 0x085, 0x086) */
+
+  U8X8_C(0x0b7),				/* set default gray scale table */
+    
+  U8X8_CA(0x081, 0x027),		/* contrast, brightness, 0..128 */
+  U8X8_CA(0x0b1, 0x071),                    /* phase length */
+  //U8X8_CA(0x0b2, 0x051),		/* frame frequency (row period) */
+  U8X8_CA(0x0b3, 0x0f0),		/* set display clock divide ratio/oscillator frequency (set clock as 135 frames/sec) */			
+  //U8X8_CA(0x0b4, 0x002),                    /* set pre-charge compensation level (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  //U8X8_CA(0x0b0, 0x028),                    /* enable pre-charge compensation (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_CAA(0x0bb, 0x035, 0x0ff),                     /* set precharge */
+  U8X8_CA(0x0bc, 0x01f),                    /* pre-charge voltage level */
+  U8X8_CA(0x0be, 0x00f),                     /* VCOMH voltage */
+  U8X8_CA(0x0bf, 0x002|0x00d),           /* VSL voltage level (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_C(0x0a4),				/* normal display mode */
+    
+  //U8X8_CA(0x023, 0x003),		/* graphics accelleration: fill pixel */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1326_256x32_nhd_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1326_256x32_nhd_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1326_256x32_nhd_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a0, 0x006),		/* remap 00110 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1326_256x32_nhd_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  //U8X8_CA(0x0a0, 0x005),		/* remap 00101 */
+  U8X8_CA(0x0a0, 0x001),		/* remap 00001 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+/*
+  input:
+    one tile (8 Bytes)
+  output:
+    Tile for ssd1326 (32 Bytes)
+*/
+
+static uint8_t u8x8_ssd1326_8to32_dest_buf[32];
+
+static uint8_t *u8x8_ssd1326_8to32(U8X8_UNUSED u8x8_t *u8x8, uint8_t *ptr)
+{
+  uint8_t v;
+  uint8_t a,b;
+  uint8_t i, j;
+  uint8_t *dest;
+  
+  for( j = 0; j < 4; j++ )
+  {
+    dest = u8x8_ssd1326_8to32_dest_buf;
+    dest += j;
+    a =*ptr;
+    ptr++;
+    b = *ptr;
+    ptr++;
+    for( i = 0; i < 8; i++ )
+    {
+      v = 0;
+      if ( a&1 ) v |= 0xf0;
+      if ( b&1 ) v |= 0x0f;
+      *dest = v;
+      dest+=4;
+      a >>= 1;
+      b >>= 1;
+    }
+  }
+  
+  return u8x8_ssd1326_8to32_dest_buf;
+}
+
+
+
+
+static uint8_t u8x8_d_ssd1326_256x32_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1326_256x32_nhd_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1326_er_256x32_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1326_256x32_nhd_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1326_256x32_nhd_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1326_256x32_nhd_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1326_256x32_nhd_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1326 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 4;
+      
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      
+      y *= 8;
+      y += u8x8->x_offset;		/* x_offset is used as y offset for the ssd1326 */
+    
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+
+	do
+	{
+          u8x8_cad_SendCmd(u8x8, 0x015 );	/* set column address */
+          u8x8_cad_SendArg(u8x8, x );	/* start */
+          u8x8_cad_SendArg(u8x8, x+3 );	/* end */
+
+          u8x8_cad_SendCmd(u8x8, 0x075 );	/* set row address */
+          u8x8_cad_SendArg(u8x8, y);
+          u8x8_cad_SendArg(u8x8, y+7);
+          
+          u8x8_cad_SendData(u8x8, 32, u8x8_ssd1326_8to32(u8x8, ptr));
+          
+	  ptr += 8;
+	  x += 4;
+	  c--;
+	} while( c > 0 );
+	
+	//x += 4;
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ssd1326_256x32_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 15,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 		/**/
+  /* sda_setup_time_ns = */ 100,		/* ssd1326  */
+  /* sck_pulse_width_ns = */ 100,	/* ssd1326  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 60,	/* ssd1326 */
+  /* tile_width = */ 32,
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 0,		/* x_offset is used as y offset for the ssd1326 */
+  /* flipmode_x_offset = */ 0,		/* x_offset is used as y offset for the ssd1326 */
+  /* pixel_width = */ 256,
+  /* pixel_height = */ 32
+};
+
+uint8_t u8x8_d_ssd1326_er_256x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1326_256x32_display_info);
+      return 1;
+    }
+    return u8x8_d_ssd1326_256x32_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1327.c

@@ -0,0 +1,571 @@
+/*
+
+  u8x8_d_ssd1327.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+static const uint8_t u8x8_d_ssd1327_96x96_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1327_96x96_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+
+/*
+  input:
+    one tile (8 Bytes)
+  output:
+    Tile for ssd1327 (32 Bytes)
+*/
+
+static uint8_t u8x8_ssd1327_8to32_dest_buf[32];
+
+static uint8_t *u8x8_ssd1327_8to32(U8X8_UNUSED u8x8_t *u8x8, uint8_t *ptr)
+{
+  uint8_t v;
+  uint8_t a,b;
+  uint8_t i, j;
+  uint8_t *dest;
+  
+  for( j = 0; j < 4; j++ )
+  {
+    dest = u8x8_ssd1327_8to32_dest_buf;
+    dest += j;
+    a =*ptr;
+    ptr++;
+    b = *ptr;
+    ptr++;
+    for( i = 0; i < 8; i++ )
+    {
+      v = 0;
+      if ( a&1 ) v |= 0xf0;
+      if ( b&1 ) v |= 0x0f;
+      *dest = v;
+      dest+=4;
+      a >>= 1;
+      b >>= 1;
+    }
+  }
+  
+  return u8x8_ssd1327_8to32_dest_buf;
+}
+
+
+
+
+static uint8_t u8x8_d_ssd1327_96x96_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1327_96x96_display_info);
+      break;
+    */
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_96x96_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_96x96_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_96x96_powersave1_seq);
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1327 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 4;
+      x+=u8x8->x_offset/2;
+    
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y *= 8;
+    
+      u8x8_cad_SendCmd(u8x8, 0x075 );	/* set row address, moved out of the loop (issue 302) */
+      u8x8_cad_SendArg(u8x8, y);
+      u8x8_cad_SendArg(u8x8, y+7);
+	  
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+
+	do
+	{
+	  u8x8_cad_SendCmd(u8x8, 0x015 );	/* set column address */
+	  u8x8_cad_SendArg(u8x8, x );	/* start */
+	  u8x8_cad_SendArg(u8x8, x+3 );	/* end */
+
+	  
+	  u8x8_cad_SendData(u8x8, 32, u8x8_ssd1327_8to32(u8x8, ptr));
+	  ptr += 8;
+	  x += 4;
+	  c--;
+	} while( c > 0 );
+	
+	//x += 4;
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=============================================*/
+/*  Seeedstudio Grove OLED 96x96 */
+
+static const u8x8_display_info_t u8x8_ssd1327_96x96_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 		/**/
+  /* sda_setup_time_ns = */ 100,		/* */
+  /* sck_pulse_width_ns = */ 100,	/*  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 1,	/* use 1 instead of 4, because the SSD1327 seems to be very slow */
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 60,	
+  /* tile_width = */ 12,
+  /* tile_hight = */ 12,
+  /* default_x_offset = */ 16,
+  /* flipmode_x_offset = */ 16,		
+  /* pixel_width = */ 96,
+  /* pixel_height = */ 96
+};
+
+/*  https://github.com/SeeedDocument/Grove_OLED_1.12/raw/master/resources/LY120-096096.pdf */
+/*  http://www.seeedstudio.com/wiki/index.php?title=Twig_-_OLED_96x96 */
+/* values from u8glib */
+/*
+  Re-map setting in Graphic Display Data RAM, command 0x0a0
+    Bit 0: Column Address Re-map
+    Bit 1: Nibble Re-map
+    Bit 2: Horizontal/Vertical Address Increment
+    Bit 3: Not used, must be 0
+    
+    Bit 4: COM Re-map
+    Bit 5: Not used, must be 0
+    Bit 6: COM Split Odd Even
+    Bit 7: Not used, must be 0
+*/
+
+
+static const uint8_t u8x8_d_ssd1327_96x96_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_CA(0x0fd, 0x012),		/* unlock display, usually not required because the display is unlocked after reset */
+  U8X8_C(0x0ae),		                /* display off */
+  //U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio: 0x03f * 1/64 duty */
+  U8X8_CA(0x0a8, 0x05f),		/* multiplex ratio: 0x05f * 1/64 duty */
+  U8X8_CA(0x0a1, 0x000),		/* display start line */
+  //U8X8_CA(0x0a2, 0x04c),		/* display offset, shift mapping ram counter */
+  
+  U8X8_CA(0x0a2, 0x020),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x051),		/* remap configuration */
+  
+  
+  U8X8_CA(0x0ab, 0x001),		/* Enable internal VDD regulator (RESET) */
+  //U8X8_CA(0x081, 0x070),		/* contrast, brightness, 0..128 */
+  U8X8_CA(0x081, 0x053),		/* contrast, brightness, 0..128 */
+  //U8X8_CA(0x0b1, 0x055),                    /* phase length */
+  U8X8_CA(0x0b1, 0x051),                    /* phase length */  
+  //U8X8_CA(0x0b3, 0x091),		/* set display clock divide ratio/oscillator frequency (set clock as 135 frames/sec) */			
+  U8X8_CA(0x0b3, 0x001),		/* set display clock divide ratio/oscillator frequency  */			
+  
+  //? U8X8_CA(0x0ad, 0x002),		/* master configuration: disable embedded DC-DC, enable internal VCOMH */
+  //? U8X8_C(0x086),				/* full current range (0x084, 0x085, 0x086) */
+  
+  U8X8_C(0x0b9),				/* use linear lookup table */
+
+  //U8X8_CA(0x0bc, 0x010),                    /* pre-charge voltage level */
+  U8X8_CA(0x0bc, 0x008),                    /* pre-charge voltage level */
+  //U8X8_CA(0x0be, 0x01c),                     /* VCOMH voltage */
+  U8X8_CA(0x0be, 0x007),                     /* VCOMH voltage */
+  U8X8_CA(0x0b6, 0x001),		/* second precharge */
+  U8X8_CA(0x0d5, 0x062),		/* enable second precharge, internal vsl (bit0 = 0) */
+
+
+  
+  U8X8_C(0x0a4),				/* normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const uint8_t u8x8_d_ssd1327_seeed_96x96_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a2, 0x020),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x051),		/* remap configuration */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1327_seeed_96x96_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a2, 0x060),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x042),		/* remap configuration */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1327_seeed_96x96(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  if ( u8x8_d_ssd1327_96x96_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+  {
+    u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1327_96x96_display_info);
+    return 1;
+  }
+  else if ( msg == U8X8_MSG_DISPLAY_INIT )
+  {
+    u8x8_d_helper_display_init(u8x8);
+    u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_96x96_init_seq);    
+    return 1;
+  }
+  else if  ( msg == U8X8_MSG_DISPLAY_SET_FLIP_MODE )
+  {
+    if ( arg_int == 0 )
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_seeed_96x96_flip0_seq);
+      u8x8->x_offset = u8x8->display_info->default_x_offset;
+    }
+    else
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_seeed_96x96_flip1_seq);
+      u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+    }
+    return 1;
+  }
+  return 0;
+}
+
+/*=============================================*/
+/*  EA W128128 round OLED 128x128 */
+/* issue #641 */
+/* https://www.lcd-module.de/fileadmin/eng/pdf/grafik/W128128-XR.pdf */
+
+static const u8x8_display_info_t u8x8_ssd1327_ea_w128128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 		/**/
+  /* sda_setup_time_ns = */ 100,		/* */
+  /* sck_pulse_width_ns = */ 100,	/*  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 1,	/* use 1 instead of 4, because the SSD1327 seems to be very slow */
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 60,	
+  /* tile_width = */ 16,
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,		
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 128
+};
+
+/* this is a copy of the init sequence for the seeed 96x96 oled */
+static const uint8_t u8x8_d_ssd1327_ea_w128128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_CA(0x0fd, 0x012),		/* unlock display, usually not required because the display is unlocked after reset */
+  U8X8_C(0x0ae),		                /* display off */
+  //U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio: 0x03f * 1/64 duty */
+  U8X8_CA(0x0a8, 0x05f),		/* multiplex ratio: 0x05f * 1/64 duty */
+  U8X8_CA(0x0a1, 0x000),		/* display start line */
+  //U8X8_CA(0x0a2, 0x04c),		/* display offset, shift mapping ram counter */
+  
+  U8X8_CA(0x0a2, 0x010),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x051),		/* remap configuration */
+  
+  
+  U8X8_CA(0x0ab, 0x001),		/* Enable internal VDD regulator (RESET) */
+  //U8X8_CA(0x081, 0x070),		/* contrast, brightness, 0..128 */
+  U8X8_CA(0x081, 0x053),		/* contrast, brightness, 0..128 */
+  //U8X8_CA(0x0b1, 0x055),                    /* phase length */
+  U8X8_CA(0x0b1, 0x051),                    /* phase length */  
+  //U8X8_CA(0x0b3, 0x091),		/* set display clock divide ratio/oscillator frequency (set clock as 135 frames/sec) */			
+  U8X8_CA(0x0b3, 0x001),		/* set display clock divide ratio/oscillator frequency  */			
+  
+  //? U8X8_CA(0x0ad, 0x002),		/* master configuration: disable embedded DC-DC, enable internal VCOMH */
+  //? U8X8_C(0x086),				/* full current range (0x084, 0x085, 0x086) */
+  
+  U8X8_C(0x0b9),				/* use linear lookup table */
+
+  //U8X8_CA(0x0bc, 0x010),                    /* pre-charge voltage level */
+  U8X8_CA(0x0bc, 0x008),                    /* pre-charge voltage level */
+  //U8X8_CA(0x0be, 0x01c),                     /* VCOMH voltage */
+  U8X8_CA(0x0be, 0x007),                     /* VCOMH voltage */
+  U8X8_CA(0x0b6, 0x001),		/* second precharge */
+  U8X8_CA(0x0d5, 0x062),		/* enable second precharge, internal vsl (bit0 = 0) */
+  
+  U8X8_C(0x0a4),				/* normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+static const uint8_t u8x8_d_ssd1327_ea_w128128_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a2, 0x000),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x051),		/* remap configuration */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1327_ea_w128128_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a2, 0x000),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x042),		/* remap configuration */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_ssd1327_ea_w128128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  if ( u8x8_d_ssd1327_96x96_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+  {
+    u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1327_ea_w128128_display_info);
+    return 1;
+  }
+  else if ( msg == U8X8_MSG_DISPLAY_INIT )
+  {
+    u8x8_d_helper_display_init(u8x8);
+    u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_ea_w128128_init_seq);    
+    return 1;
+  }
+  else if  ( msg == U8X8_MSG_DISPLAY_SET_FLIP_MODE )
+  {
+    if ( arg_int == 0 )
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_ea_w128128_flip0_seq);
+      u8x8->x_offset = u8x8->display_info->default_x_offset;
+    }
+    else
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_ea_w128128_flip1_seq);
+      u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+    }
+    return 1;
+  }
+  return 0;
+}
+
+/*=============================================*/
+/*  MIDAS MCOT128128C1V-YM 128x128 Module */
+
+
+static const u8x8_display_info_t u8x8_ssd1327_128x128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 10,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 		/**/
+  /* sda_setup_time_ns = */ 100,		/* */
+  /* sck_pulse_width_ns = */ 100,	/*  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 1,	/* use 1 instead of 4, because the SSD1327 seems to be very slow */
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 60,	
+  /* tile_width = */ 16,
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,		
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 128
+};
+
+/*  https://github.com/SeeedDocument/Grove_OLED_1.12/raw/master/resources/LY120-096096.pdf */
+/*  http://www.seeedstudio.com/wiki/index.php?title=Twig_-_OLED_96x96 */
+/* values from u8glib */
+/*
+  Re-map setting in Graphic Display Data RAM, command 0x0a0
+    Bit 0: Column Address Re-map
+    Bit 1: Nibble Re-map
+    Bit 2: Horizontal/Vertical Address Increment
+    Bit 3: Not used, must be 0
+    
+    Bit 4: COM Re-map
+    Bit 5: Not used, must be 0
+    Bit 6: COM Split Odd Even
+    Bit 7: Not used, must be 0
+*/
+
+
+static const uint8_t u8x8_d_ssd1327_128x128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+	
+  U8X8_CA(0x0fd, 0x012),		/* unlock display, usually not required because the display is unlocked after reset */
+  U8X8_C(0x0ae),		                /* display off */
+  //U8X8_CA(0x0a8, 0x03f),		/* multiplex ratio: 0x03f * 1/64 duty */
+  //U8X8_CA(0x0a8, 0x05f),		/* multiplex ratio: 0x05f * 1/64 duty */
+  U8X8_CA(0x0a8, 0x07f),       		 /* multiplex ratio: 0x05f * 1/128duty */
+  U8X8_CA(0x0a1, 0x000),		/* display start line */
+  //U8X8_CA(0x0a2, 0x04c),		/* display offset, shift mapping ram counter */
+  
+  U8X8_CA(0x0a2, 0x000),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x051),		/* remap configuration */
+  
+  
+  U8X8_CA(0x0ab, 0x001),		/* Enable internal VDD regulator (RESET) */
+  //U8X8_CA(0x081, 0x070),		/* contrast, brightness, 0..128 */
+  U8X8_CA(0x081, 0x053),		/* contrast, brightness, 0..128 */
+  //U8X8_CA(0x0b1, 0x055),                    /* phase length */
+  U8X8_CA(0x0b1, 0x051),                    /* phase length */  
+  //U8X8_CA(0x0b3, 0x091),		/* set display clock divide ratio/oscillator frequency (set clock as 135 frames/sec) */			
+  U8X8_CA(0x0b3, 0x001),		/* set display clock divide ratio/oscillator frequency  */			
+  
+  //? U8X8_CA(0x0ad, 0x002),		/* master configuration: disable embedded DC-DC, enable internal VCOMH */
+  //? U8X8_C(0x086),				/* full current range (0x084, 0x085, 0x086) */
+  
+  U8X8_C(0x0b9),				/* use linear lookup table */
+
+  //U8X8_CA(0x0bc, 0x010),                    /* pre-charge voltage level */
+  U8X8_CA(0x0bc, 0x008),                    /* pre-charge voltage level */
+  //U8X8_CA(0x0be, 0x01c),                     /* VCOMH voltage */
+  U8X8_CA(0x0be, 0x007),                     /* VCOMH voltage */
+  U8X8_CA(0x0b6, 0x001),		/* second precharge */
+  U8X8_CA(0x0d5, 0x062),		/* enable second precharge, internal vsl (bit0 = 0) */
+
+
+  
+  U8X8_C(0x0a4),				/* normal display mode */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const uint8_t u8x8_d_ssd1327_128x128_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a2, 0x000),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x051),		/* remap configuration */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1327_128x128_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a2, 0x000),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a0, 0x042),		/* remap configuration */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1327_midas_128x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call the 96x96 procedure at the moment */
+  if ( u8x8_d_ssd1327_96x96_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+  {
+    u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1327_128x128_display_info);
+    return 1;
+  }
+  else if ( msg == U8X8_MSG_DISPLAY_INIT )
+  {
+    u8x8_d_helper_display_init(u8x8);
+    u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_128x128_init_seq); 
+    return 1;
+  }
+  else if  ( msg == U8X8_MSG_DISPLAY_SET_FLIP_MODE )
+  {
+    if ( arg_int == 0 )
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_128x128_flip0_seq);
+      u8x8->x_offset = u8x8->display_info->default_x_offset;
+    }
+    else
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1327_128x128_flip1_seq);
+      u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+    }
+    return 1;
+  }
+  return 0;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1329.c

@@ -0,0 +1,298 @@
+/*
+
+  u8x8_d_ssd1329.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+
+
+static const uint8_t u8x8_d_ssd1329_128x96_noname_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_CA(0x0b3, 0x091),		/* set display clock divide ratio/oscillator frequency (set clock as 135 frames/sec) */			
+  U8X8_CA(0x0a8, 0x05f),		/* multiplex ratio: 0x03f * 1/64 duty - changed by CREESOO, acc. to datasheet, 100317*/ 
+  U8X8_CA(0x0a2, 0x000),		/* display offset, shift mapping ram counter */
+  U8X8_CA(0x0a1, 0x000),		/* display start line */
+  U8X8_CA(0x0ad, 0x002),		/* master configuration: disable embedded DC-DC, enable internal VCOMH */
+  U8X8_CA(0x0a0, 0x052),		/* remap configuration, horizontal address increment (bit 2 = 0), enable nibble remap (upper nibble is left, bit 1 = 1) */
+  U8X8_C(0x086),				/* full current range (0x084, 0x085, 0x086) */
+#ifdef removed
+  U8X8_C(0x0b8),				/* set gray scale table */
+    U8X8_A(1),				/* */
+    U8X8_A(5),				/* */
+    U8X8_A(10),				/* */
+    U8X8_A(14),				/* */
+    U8X8_A(19),				/* */
+    U8X8_A(23),				/* */
+    U8X8_A(28),				/* */
+    U8X8_A(32),				/* */
+    U8X8_A(37),				/* */
+    U8X8_A(41),				/* */
+    U8X8_A(46),				/* */
+    U8X8_A(50),				/* */
+    U8X8_A(55),				/* */
+    U8X8_A(59),				/* */
+    U8X8_A(63),				/* */
+#endif 
+
+  U8X8_C(0x0b7),				/* set default gray scale table */
+    
+  U8X8_CA(0x081, 0x070),		/* contrast, brightness, 0..128 */
+  U8X8_CA(0x0b2, 0x051),		/* frame frequency (row period) */
+  U8X8_CA(0x0b1, 0x055),                    /* phase length */
+  U8X8_CA(0x0bc, 0x010),                    /* pre-charge voltage level */
+  U8X8_CA(0x0b4, 0x002),                    /* set pre-charge compensation level (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_CA(0x0b0, 0x028),                    /* enable pre-charge compensation (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_CA(0x0be, 0x01c),                     /* VCOMH voltage */
+  U8X8_CA(0x0bf, 0x002|0x00d),           /* VSL voltage level (not documented in the SDD1325 datasheet, but used in the NHD init seq.) */
+  U8X8_C(0x0a4),				/* normal display mode */
+    
+  U8X8_CA(0x023, 0x003),		/* graphics accelleration: fill pixel */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1329_128x96_nhd_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1329_128x96_nhd_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1329_128x96_nhd_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a0, 0x052),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1329_128x96_nhd_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0a0, 0x041),		/* remap */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+/*
+  input:
+    one tile (8 Bytes)
+  output:
+    Tile for ssd1329 (32 Bytes)
+*/
+
+static uint8_t u8x8_ssd1329_8to32_dest_buf[32];
+
+static uint8_t *u8x8_ssd1329_8to32(U8X8_UNUSED u8x8_t *u8x8, uint8_t *ptr)
+{
+  uint8_t v;
+  uint8_t a,b;
+  uint8_t i, j;
+  uint8_t *dest;
+  
+  for( j = 0; j < 4; j++ )
+  {
+    dest = u8x8_ssd1329_8to32_dest_buf;
+    dest += j;
+    a =*ptr;
+    ptr++;
+    b = *ptr;
+    ptr++;
+    for( i = 0; i < 8; i++ )
+    {
+      v = 0;
+      if ( a&1 ) v |= 0xf0;
+      if ( b&1 ) v |= 0x0f;
+      *dest = v;
+      dest+=4;
+      a >>= 1;
+      b >>= 1;
+    }
+  }
+  
+  return u8x8_ssd1329_8to32_dest_buf;
+}
+
+
+
+
+static uint8_t u8x8_d_ssd1329_128x96_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1329_128x96_nhd_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1329_128x96_noname_init_seq);    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1329_128x96_nhd_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1329_128x96_nhd_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1329_128x96_nhd_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1329_128x96_nhd_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* ssd1329 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 4;
+      
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      
+      y *= 8;
+      y += u8x8->x_offset;		/* x_offset is used as y offset for the ssd1329 */
+    
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+
+	do
+	{
+	  if ( ptr[0] | ptr[1] | ptr[2] | ptr[3] | ptr[4] | ptr[5] | ptr[6] | ptr[7] )
+	  {
+	    /* draw the tile if pattern is not zero for all bytes */
+	    u8x8_cad_SendCmd(u8x8, 0x015 );	/* set column address */
+	    u8x8_cad_SendArg(u8x8, x );	/* start */
+	    u8x8_cad_SendArg(u8x8, x+3 );	/* end */
+
+	    u8x8_cad_SendCmd(u8x8, 0x075 );	/* set row address */
+	    u8x8_cad_SendArg(u8x8, y);
+	    u8x8_cad_SendArg(u8x8, y+7);
+	    
+	    
+	    u8x8_cad_SendData(u8x8, 32, u8x8_ssd1329_8to32(u8x8, ptr));
+	  }
+	  else
+	  {
+	    /* tile is empty, use the graphics acceleration command */
+	    /* are this really available on the SSD1329??? */
+	    u8x8_cad_SendCmd(u8x8, 0x024 );	// draw rectangle
+	    u8x8_cad_SendArg(u8x8, x );	
+	    u8x8_cad_SendArg(u8x8, y );	
+	    u8x8_cad_SendArg(u8x8, x+3 );	
+	    u8x8_cad_SendArg(u8x8, y+7 );	
+	    u8x8_cad_SendArg(u8x8, 0 );	// clear	    
+	  }
+	  ptr += 8;
+	  x += 4;
+	  c--;
+	} while( c > 0 );
+	
+	//x += 4;
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ssd1329_128x96_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,
+  /* pre_chip_disable_wait_ns = */ 15,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 		/**/
+  /* sda_setup_time_ns = */ 100,		/* ssd1329  */
+  /* sck_pulse_width_ns = */ 100,	/* ssd1329  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 60,	/* ssd1329 */
+  /* tile_width = */ 16,
+  /* tile_hight = */ 12,
+  /* default_x_offset = */ 0,		/* x_offset is used as y offset for the ssd1329 */
+  /* flipmode_x_offset = */ 0,		/* x_offset is used as y offset for the ssd1329 */
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 96
+};
+
+uint8_t u8x8_d_ssd1329_128x96_noname(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1329_128x96_display_info);
+      return 1;
+    }
+    return u8x8_d_ssd1329_128x96_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1606_172x72.c

@@ -0,0 +1,394 @@
+/*
+
+  u8x8_d_ssd1606_172x72.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+  SSD1606: 128x180x2 
+  two-bit, four graylevels
+  command 
+    0x22: assign actions
+    0x20: execute actions
+  
+  action for command 0x022 are (more or less guessed)
+    bit 7:	Enable Clock
+    bit 6:	Enable Charge Pump
+    bit 5:	Load Temparture Value (???)
+    bit 4:	Load LUT (???)
+    bit 3:	Initial Display (???)
+    bit 2:	Pattern Display --> Requires about 945ms with the LUT from below
+    bit 1:	Disable Charge Pump
+    bit 0:	Disable Clock
+    
+    Disable Charge Pump and Clock require about 267ms
+    Enable Charge Pump and Clock require about 10ms
+
+  Notes:
+    - Introduced a refresh display message, which copies RAM to display
+    - Charge pump and clock are only enabled for the transfer RAM to display
+    - U8x8 will not really work because of the two buffers in the SSD1606, however U8g2 should be ok.
+
+*/
+
+
+#include "u8x8.h"
+
+
+#define L(a,b,c,d) (((a)<<6)|((b)<<4)|((c)<<2)|(d))
+
+
+/* GDE021A1, 2.1" EPD */
+static const uint8_t u8x8_d_ssd1606_172x72_gde021a1_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_CA(0x10, 0x00),	/* Deep Sleep mode Control: Disable */
+  U8X8_CA(0x11, 0x03),	/* Define data entry mode, x&y inc, x first */
+  U8X8_CAA(0x44, 0, 31),	/* RAM x start & end, each byte has 4 pixel, 32*4=128 */
+  U8X8_CAA(0x45, 0, 179),	/* RAM y start & end, 179 MAX */
+  
+  U8X8_CA(0x4e, 0),	/* set x pos, 0..31 */
+  U8X8_CA(0x4f, 0),	/* set y pos, 0...179 */
+
+  U8X8_CA(0xf0, 0x1f),	/* set booster feedback to internal */
+  U8X8_CA(0x22, 0xc0),	/* display update seq. option: enable clk, enable CP, .... todo: this is never activated */
+  
+  U8X8_C(0x32),	/* write LUT register*/
+
+#ifdef ORIGINAL_LUT
+  
+  /* wavefrom part of the LUT: absolute LUT... this will always force the destination color */
+  U8X8_A4(0x00,0x00,0x00,0x55),  /* step 0 */
+  U8X8_A4(0x00,0x00,0x55,0x55),	/* step 1 */
+  U8X8_A4(0x00,0x55,0x55,0x55),
+  U8X8_A4(0xAA,0xAA,0xAA,0xAA),
+  U8X8_A4(0x15,0x15,0x15,0x15),
+  U8X8_A4(0x05,0x05,0x05,0x05),
+  U8X8_A4(0x01,0x01,0x01,0x01),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),	/* step 19 */
+  
+  /* timing part of the LUT */
+  U8X8_A8(0x22,0xFB,0x22,0x1B,0x00,0x00,0x00,0x00),
+  U8X8_A(0x00),U8X8_A(0x00),
+
+#else
+
+  /* the following LUT will not change anything if the old and the new values are the same */
+  /* 03 02 01 00	13 12 11 10 	23 22 21 20	33 32 31 30 				original */
+  U8X8_A4(L(0, 0, 0, 0), 	L(0, 0, 0, 0), 	L(0, 0, 0, 0), 	L(0, 1, 1, 1)),		// 0x00,0x00,0x00,0x55,	step 0
+  U8X8_A4(L(0, 0, 0, 0), 	L(0, 0, 0, 0), 	L(1, 0, 1, 1), 	L(0, 1, 1, 1)),		// 0x00,0x00,0x55,0x55,	step 1
+  U8X8_A4(L(0, 0, 0, 0), 	L(1, 1, 0, 1), 	L(1, 0, 1, 1), 	L(0, 1, 1, 1)),		// 0x00,0x55,0x55,0x55,	step 2
+  U8X8_A4(L(2, 2, 2, 0), 	L(2, 2, 0, 2), 	L(2, 0, 2, 2), 	L(0, 2, 2, 2)),		// 0xAA,0xAA,0xAA,0xAA,	step 3
+  U8X8_A4(L(0, 1, 1, 0), 	L(0, 1, 0, 1), 	L(0, 0, 1, 1), 	L(0, 1, 1, 1)),		// 0x15,0x15,0x15,0x15,	step 4
+  U8X8_A4(L(0, 0, 1, 0), 	L(0, 0, 0, 1), 	L(0, 0, 1, 1), 	L(0, 0, 1, 1)),		// 0x05,0x05,0x05,0x05,	step 5
+  U8X8_A4(L(0, 0, 0, 0), 	L(0, 0, 0, 1), 	L(0, 0, 0, 1), 	L(0, 0, 0, 1)),		// 0x01,0x01,0x01,0x01,	step 6
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),
+  U8X8_A4(0x00,0x00,0x00,0x00),	/* step 19 */
+  
+  /* timing part of the LUT */
+  U8X8_A8(0x22,0xFB,0x22,0x1B,0x00,0x00,0x00,0x00),
+  U8X8_A(0x00),U8X8_A(0x00),
+
+#endif
+  
+  U8X8_CA(0x2c, 0xa0),	/* write vcom value*/
+  U8X8_CA(0x3c, 0x63),	/* select boarder waveform */
+  U8X8_CA(0x22, 0xc4),	/* display update seq. option: clk -> CP -> LUT -> initial display -> pattern display */
+    /* 0x0c4 is mentioned in chapter 9.2 of the GDE021A1 data sheet */
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1606_to_display_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  
+  //U8X8_CA(0x22, 0xc0),	/* display update seq. option: Enable clock and charge pump */
+  //U8X8_C(0x20),	/* execute sequence */
+  //U8X8_DLY(10),
+  /* strange, splitting 0x0c0 does not work reliable */
+  
+  U8X8_CA(0x22, 0xc4),	/* display update seq. option: clk -> CP -> LUT -> initial display -> pattern display */
+  U8X8_C(0x20),	/* execute sequence */
+  U8X8_DLY(250),	/* the sequence above requires about 970ms */
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(230),
+  
+  U8X8_CA(0x22, 0x03),	/* disable clock and charge pump */
+  U8X8_DLY(200),		/* this requres about 270ms */
+  U8X8_DLY(90),  
+  
+  //U8X8_CA(0x10, 0x01), /* deep sleep mode */
+  //U8X8_C(0x20), 		/* execute sequence */
+  U8X8_DLY(50),  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+// static const uint8_t u8x8_d_ssd1606_172x72_powersave0_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+
+// static const uint8_t u8x8_d_ssd1606_172x72_powersave1_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+// static const uint8_t u8x8_d_ssd1606_172x72_flip0_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+// static const uint8_t u8x8_d_ssd1606_172x72_flip1_seq[] = {
+//   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+//   U8X8_END_TRANSFER(),             	/* disable chip */
+//   U8X8_END()             			/* end of sequence */
+// };
+
+
+static uint8_t *u8x8_convert_tile_for_ssd1606(uint8_t *t)
+{
+  uint8_t i;
+  uint16_t r;
+  static uint8_t buf[16];
+  uint8_t *pbuf = buf;
+
+  for( i = 0; i < 8; i++ )
+  {
+    r = u8x8_upscale_byte(~(*t++));
+    *pbuf++ = (r>>8) & 255;
+    *pbuf++ = r & 255;
+  }
+  return buf;
+}
+
+static void u8x8_d_ssd1606_draw_tile(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr) U8X8_NOINLINE;
+static void u8x8_d_ssd1606_draw_tile(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c, page;
+  uint8_t *ptr;
+  u8x8_cad_StartTransfer(u8x8);
+
+  page = u8x8->display_info->tile_height;
+  page --;
+  page -= (((u8x8_tile_t *)arg_ptr)->y_pos);
+  page *= 2;
+
+
+  x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+  x *= 8;
+  x += u8x8->x_offset;
+
+  u8x8_cad_SendCmd(u8x8, 0x00f );	/* scan start */
+  u8x8_cad_SendArg(u8x8, 0);
+
+  u8x8_cad_SendCmd(u8x8, 0x011 );	/* cursor increment mode */
+  u8x8_cad_SendArg(u8x8, 3);
+
+  u8x8_cad_SendCmd(u8x8, 0x045 );	/* window start column */
+  u8x8_cad_SendArg(u8x8, 0);
+  u8x8_cad_SendArg(u8x8, 179);		/* end of display */
+
+  u8x8_cad_SendCmd(u8x8, 0x044 );	/* window end page */
+  u8x8_cad_SendArg(u8x8, page);
+  u8x8_cad_SendArg(u8x8, page+1);
+
+  u8x8_cad_SendCmd(u8x8, 0x04f );	/* window column */
+  u8x8_cad_SendArg(u8x8, x);
+
+  u8x8_cad_SendCmd(u8x8, 0x04e );	/* window row */
+  u8x8_cad_SendArg(u8x8, page);
+
+  u8x8_cad_SendCmd(u8x8, 0x024 );
+  
+  do
+  {
+    c = ((u8x8_tile_t *)arg_ptr)->cnt;
+    ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+    do
+    {
+      u8x8_cad_SendData(u8x8, 16, u8x8_convert_tile_for_ssd1606(ptr));
+      ptr += 8;
+      x += 8;
+      c--;
+    } while( c > 0 );
+    
+    arg_int--;
+  } while( arg_int > 0 );
+  
+  u8x8_cad_EndTransfer(u8x8);
+}
+
+
+static uint8_t u8x8_d_ssd1606_172x72_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1606_172x72_display_info);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1606_172x72_gde021a1_init_seq);    
+    
+      /* special code for the SSD1606... */
+      /* ensure that the initial buffer is clear and all eInk is set to white */
+      /* this is done here, because the LUT will be of that kind, that it uses the previous color */
+      /* make everything black */
+      u8x8_FillDisplay(u8x8);		
+      /* write content to the display */
+      u8x8_RefreshDisplay(u8x8);
+      /* now make everything clear */
+      u8x8_FillDisplay(u8x8);		
+      /* write content to the display */
+      u8x8_RefreshDisplay(u8x8);
+      /* now make everything clear */
+      u8x8_ClearDisplay(u8x8);		
+      /* write content to the display */
+      u8x8_RefreshDisplay(u8x8);
+
+      u8x8_ClearDisplay(u8x8);		
+      /* write content to the display */
+      u8x8_RefreshDisplay(u8x8);
+    
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+/*
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1606_172x72_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1606_172x72_powersave1_seq);
+*/
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+/*
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1606_172x72_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1606_172x72_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }
+*/
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+/*
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_EndTransfer(u8x8);
+*/
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_d_ssd1606_draw_tile(u8x8, arg_int, arg_ptr);
+      break;
+    case U8X8_MSG_DISPLAY_REFRESH:
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1606_to_display_seq);    
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+static const u8x8_display_info_t u8x8_ssd1606_172x72_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 120,
+  /* pre_chip_disable_wait_ns = */ 60,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 50,		/* SSD1606: */
+  /* sck_pulse_width_ns = */ 100,	/* SSD1606: 100ns */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	
+  /* tile_width = */ 22,		/* 22*8 = 176 */
+  /* tile_hight = */ 9,		/* 9*8 = 72 */
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 172,
+  /* pixel_height = */ 72		
+};
+
+uint8_t u8x8_d_ssd1606_172x72(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+    if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+    {
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1606_172x72_display_info);
+      return 1;
+    }
+    return u8x8_d_ssd1606_172x72_generic(u8x8, msg, arg_int, arg_ptr);
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_ssd1607_200x200.c

@@ -0,0 +1,597 @@
+/*
+
+  u8x8_d_ssd1607_200x200.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+  SSD1607: 200x300x1
+  
+  command 
+    0x22: assign actions
+    0x20: execute actions
+  
+  action for command 0x022 are (more or less guessed)
+    bit 7:	Enable Clock
+    bit 6:	Enable Charge Pump
+    bit 5:	Load Temparture Value (???)
+    bit 4:	Load LUT (???)
+    bit 3:	Initial Display (???)
+    bit 2:	Pattern Display --> Requires about 945ms with the LUT from below
+    bit 1:	Disable Charge Pump
+    bit 0:	Disable Clock
+    
+    Disable Charge Pump and Clock require about 267ms
+    Enable Charge Pump and Clock require about 10ms
+
+  Notes:
+    - Introduced a refresh display message, which copies RAM to display
+    - Charge pump and clock are only enabled for the transfer RAM to display
+    - U8x8 will not really work because of the two buffers in the SSD1606, however U8g2 should be ok.
+
+*/
+
+
+#include "u8x8.h"
+
+/*=================================================*/
+
+static const u8x8_display_info_t u8x8_ssd1607_200x200_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* values from SSD1606 */
+  /* post_chip_enable_wait_ns = */ 120,
+  /* pre_chip_disable_wait_ns = */ 60,
+  /* reset_pulse_width_ms = */ 100, 	
+  /* post_reset_wait_ms = */ 100, 
+  /* sda_setup_time_ns = */ 50,		/* SSD1606: */
+  /* sck_pulse_width_ns = */ 100,	/* SSD1606: 100ns */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 2,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,
+  /* write_pulse_width_ns = */ 150,	
+  /* tile_width = */ 25,		/* 25*8 = 200 */
+  /* tile_hight = */ 25,		
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 200,
+  /* pixel_height = */ 200		
+};
+
+
+static const uint8_t u8x8_d_ssd1607_200x200_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x22, 0xc0),			/* enable clock and charge pump */
+  U8X8_C(0x20),				/* execute sequence */  
+  U8X8_DLY(200),				/* according to my measures it may take up to 150ms */
+  U8X8_DLY(100),				/* but it might take longer */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1607_200x200_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */  
+  /* disable clock and charge pump only, deep sleep is not entered, because we will loose RAM content */
+  U8X8_CA(0x22, 0x02),			/* only disable charge pump, HW reset seems to be required if the clock is disabled */
+  U8X8_C(0x20),				/* execute sequence */  
+  U8X8_DLY(20),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const uint8_t u8x8_d_ssd1607_200x200_exec_1000dly_seq[] = {
+  // assumes, that the start transfer has happend
+  U8X8_CA(0x22, 0x04),	/* display update seq. option: pattern display */
+  U8X8_C(0x20),	/* execute sequence */
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static void u8x8_d_ssd1607_200x200_first_init(u8x8_t *u8x8)
+{
+      u8x8_ClearDisplay(u8x8);
+  
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x032);		// program update sequence
+      u8x8_cad_SendMultipleArg(u8x8, 8, 0x055);		// all black
+      u8x8_cad_SendMultipleArg(u8x8, 12, 0x0aa);		// all white
+      u8x8_cad_SendMultipleArg(u8x8, 10, 0x022);		// 830ms
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_exec_1000dly_seq);
+  
+}
+
+static uint8_t *u8x8_convert_tile_for_ssd1607(uint8_t *t)
+{
+  uint8_t i;
+  static uint8_t buf[8];
+  uint8_t *pbuf = buf;
+
+  for( i = 0; i < 8; i++ )
+  {
+    *pbuf++ = ~(*t++);
+  }
+  return buf;
+}
+
+static void u8x8_d_ssd1607_draw_tile(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr) U8X8_NOINLINE;
+static void u8x8_d_ssd1607_draw_tile(u8x8_t *u8x8, uint8_t arg_int, void *arg_ptr)
+{
+  uint16_t x;
+  uint8_t c, page;
+  uint8_t *ptr;
+  u8x8_cad_StartTransfer(u8x8);
+
+  page = u8x8->display_info->tile_height;
+  page --;
+  page -= (((u8x8_tile_t *)arg_ptr)->y_pos);
+  
+  x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+  x *= 8;
+  x += u8x8->x_offset;
+
+  u8x8_cad_SendCmd(u8x8, 0x045 );	/* window start column */
+  u8x8_cad_SendArg(u8x8, 0);
+  u8x8_cad_SendArg(u8x8, 0);
+  u8x8_cad_SendArg(u8x8, 199);		/* end of display */
+  u8x8_cad_SendArg(u8x8, 0);
+
+  u8x8_cad_SendCmd(u8x8, 0x044 );	/* window end page */
+  u8x8_cad_SendArg(u8x8, page);
+  u8x8_cad_SendArg(u8x8, page);
+
+  u8x8_cad_SendCmd(u8x8, 0x04f );	/* window column */
+  u8x8_cad_SendArg(u8x8, x&255);
+  u8x8_cad_SendArg(u8x8, x>>8);
+
+  u8x8_cad_SendCmd(u8x8, 0x04e );	/* window row */
+  u8x8_cad_SendArg(u8x8, page);
+
+  u8x8_cad_SendCmd(u8x8, 0x024 );
+  
+  do
+  {
+    c = ((u8x8_tile_t *)arg_ptr)->cnt;
+    ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+    do
+    {
+      u8x8_cad_SendData(u8x8, 8, u8x8_convert_tile_for_ssd1607(ptr));
+      ptr += 8;
+      x += 8;
+      c--;
+    } while( c > 0 );
+    
+    arg_int--;
+  } while( arg_int > 0 );
+  
+  u8x8_cad_EndTransfer(u8x8);
+}
+
+
+
+/*=================================================*/
+
+
+#define L(a,b,c,d) (((a)<<6)|((b)<<4)|((c)<<2)|(d))
+
+
+/* https://github.com/embeddedadventures/SSD1607/blob/master/SSD1607.cpp */
+static const uint8_t u8x8_d_ssd1607_200x200_init_seq[] = {    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  //U8X8_CA(0x10, 0x00),	/* Deep Sleep mode Control: Disable */
+  U8X8_C(0x01),
+  U8X8_A(199),U8X8_A(0),U8X8_A(0),
+  
+  
+  U8X8_CA(0x03, 0x00), 	/* Gate Driving voltage: 15V (lowest value)*/
+  U8X8_CA(0x04, 0x0a), 	/* Source Driving voltage: 15V (mid value and POR)*/
+  
+  U8X8_CA(0x0f, 0x00),		/* scan start ? */
+  
+  U8X8_CA(0xf0, 0x1f),	/* set booster feedback to internal */
+
+  U8X8_CA(0x2c, 0xa8),	/* write vcom value*/
+  U8X8_CA(0x3a, 0x1a),	/* dummy lines */
+  U8X8_CA(0x3b, 0x08),	/* gate time */
+  U8X8_CA(0x3c, 0x33),	/* select boarder waveform */
+  
+  U8X8_CA(0x11, 0x03),		/* cursor increment mode */
+  U8X8_CAA(0x44, 0, 24),	/* RAM x start & end, each byte has 8 pixel, 25*4=200 */
+  U8X8_CAAAA(0x45, 0, 0, 299&255, 299>>8),	/* RAM y start & end, 0..299 */
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_ssd1607_to_display_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_C(0x32),	/* write LUT register*/
+
+  
+  /* according to the command table, the lut has 240 bits (=30 bytes * 8 bits) */
+  
+  /* Waveform part of the LUT (20 bytes) */
+  /* bit 7/6: 1 - 1 transition */
+  /* bit 5/4: 1 - 0 transition */
+  /* bit 3/2: 0 - 1 transition */
+  /* bit 1/0: 0 - 0 transition */
+  /* 	00 – VSS */
+  /* 	01 – VSH */
+  /* 	10 – VSL */
+  /* 	11 – NA */
+  
+  /* original values */
+  /*
+  U8X8_A(0x02),
+  U8X8_A(0x02),
+  U8X8_A(0x01),
+  U8X8_A(0x11),
+  U8X8_A(0x12),
+  U8X8_A(0x12),
+  U8X8_A(0x22),
+  U8X8_A(0x22),
+  U8X8_A(0x66),
+  U8X8_A(0x69),
+  U8X8_A(0x69),
+  U8X8_A(0x59),
+  U8X8_A(0x58),
+  U8X8_A(0x99),
+  U8X8_A(0x99),
+  U8X8_A(0x88),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  */
+  
+  /* original values, L-macro */
+  U8X8_A(L(0,0,0,2)), // 0x02
+  U8X8_A(L(0,0,0,2)), // 0x02
+  U8X8_A(L(0,0,0,1)), // 0x01
+  U8X8_A(L(0,1,0,1)), // 0x11
+  U8X8_A(L(0,1,0,2)), // 0x12
+  U8X8_A(L(0,1,0,2)), // 0x12
+  U8X8_A(L(0,2,0,2)), // 0x22
+  U8X8_A(L(0,2,0,2)), // 0x22
+  U8X8_A(L(1,2,1,2)), // 0x66
+  U8X8_A(L(1,2,2,1)), // 0x69
+  U8X8_A(L(1,2,2,1)), // 0x69
+  U8X8_A(L(1,1,2,1)), // 0x59
+  U8X8_A(L(1,1,2,0)), // 0x58
+  U8X8_A(L(2,1,2,1)), // 0x99
+  U8X8_A(L(2,1,2,1)), // 0x99
+  U8X8_A(L(2,0,2,0)), // 0x88
+  U8X8_A(L(0,0,0,0)), // 0x00
+  U8X8_A(L(0,0,0,0)), // 0x00
+  U8X8_A(L(0,0,0,0)), // 0x00
+  U8X8_A(L(0,0,0,0)), // 0x00
+
+
+  /* orginal values without 0-0 and 1-1 transition */
+  /*
+  U8X8_A(L(3,0,0,3)), // 0x02
+  U8X8_A(L(3,0,0,3)), // 0x02
+  U8X8_A(L(3,0,0,3)), // 0x01
+  U8X8_A(L(3,1,0,3)), // 0x11
+  U8X8_A(L(3,1,0,3)), // 0x12
+  U8X8_A(L(3,1,0,3)), // 0x12
+  U8X8_A(L(3,2,0,3)), // 0x22
+  U8X8_A(L(3,2,0,3)), // 0x22
+  U8X8_A(L(3,2,1,3)), // 0x66
+  U8X8_A(L(3,2,2,3)), // 0x69
+  U8X8_A(L(3,2,2,3)), // 0x69
+  U8X8_A(L(3,1,2,3)), // 0x59
+  U8X8_A(L(3,1,2,3)), // 0x58
+  U8X8_A(L(3,1,2,3)), // 0x99
+  U8X8_A(L(3,1,2,3)), // 0x99
+  U8X8_A(L(3,0,2,3)), // 0x88
+  U8X8_A(L(3,0,0,3)), // 0x00
+  U8X8_A(L(3,0,0,3)), // 0x00
+  U8X8_A(L(3,0,0,3)), // 0x00
+  U8X8_A(L(3,0,0,3)), // 0x00
+  */
+  
+  
+  /* Timing part of the LUT, 20 Phases with 4 bit each: 10 bytes */
+  U8X8_A(0xF8),
+  U8X8_A(0xB4),
+  U8X8_A(0x13),
+  U8X8_A(0x51),
+  U8X8_A(0x35),
+  U8X8_A(0x51),
+  U8X8_A(0x51),
+  U8X8_A(0x19),
+  U8X8_A(0x01),
+  U8X8_A(0x00),
+  
+  
+  U8X8_CA(0x22, 0x04),	/* display update seq. option: clk -> CP -> LUT -> initial display -> pattern display */
+  U8X8_C(0x20),	/* execute sequence */
+  U8X8_DLY(250),	/* the sequence above requires about 1200ms for the 200x200 display*/
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1607_200x200(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1607_200x200_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_init_seq);    
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave0_seq);
+      u8x8_d_ssd1607_200x200_first_init(u8x8);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_d_ssd1607_draw_tile(u8x8, arg_int, arg_ptr);
+      break;
+    case U8X8_MSG_DISPLAY_REFRESH:
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_to_display_seq);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/*=================================================*/
+/* there is no improvement possible... so i consider the v2 version as obsolete */
+
+
+static const uint8_t u8x8_d_ssd1607_v2_to_display_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  /*
+0xaa, 0x09, 0x09, 0x19, 0x19, 
+0x11, 0x11, 0x11, 0x11, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 
+
+0x75, 0x77, 0x77, 0x77, 0x07, 
+0x00, 0x00, 0x00, 0x00, 0x00
+measured 1240 ms with IL3830 196x128
+  
+  
+0x02, 0x02, 0x01, 0x11, 0x12, 
+0x12, 0x12, 0x22, 0x22, 0x66, 
+0x69, 0x59, 0x58, 0x99, 0x99, 
+0x88, 0x00, 0x00, 0x00, 0x00, 
+
+0xf8, 0xb4, 0x13, 0x51, 0x35, 
+0x51, 0x51, 0xe9, 0x04, 0x00
+  
+*/
+
+  U8X8_C(0x32),	/* write LUT register*/
+
+  /* https://github.com/olikraus/u8g2/issues/347 */
+  U8X8_A(0x02),
+  U8X8_A(0x02),
+  U8X8_A(0x01),
+  U8X8_A(0x11),
+  U8X8_A(0x12),
+  U8X8_A(0x12),
+  U8X8_A(0x22),
+  U8X8_A(0x22),
+  U8X8_A(0x66),
+  U8X8_A(0x69),
+  U8X8_A(0x69),
+  U8X8_A(0x59),
+  U8X8_A(0x58),
+  U8X8_A(0x99),
+  U8X8_A(0x99),
+  
+  U8X8_A(0x88),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  U8X8_A(0x00),
+  
+  /* Timing part of the LUT, 20 Phases with 4 bit each: 10 bytes */
+  U8X8_A(0xF8),
+  U8X8_A(0xB4),
+  U8X8_A(0x13),
+  U8X8_A(0x51),
+  U8X8_A(0x35),
+  
+  U8X8_A(0x51),
+  U8X8_A(0x51),
+  U8X8_A(0xe9),
+  U8X8_A(0x04),
+  U8X8_A(0x00),
+  
+  U8X8_CA(0x22, 0x04),	/* display update seq. option: clk -> CP -> LUT -> initial display -> pattern display */
+  U8X8_C(0x20),	/* execute sequence */
+  
+  U8X8_DLY(250),	/* delay for 1500ms. The current sequence takes 1300ms */
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1607_v2_200x200(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1607_200x200_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_init_seq);    
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave0_seq);
+      u8x8_d_ssd1607_200x200_first_init(u8x8);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_d_ssd1607_draw_tile(u8x8, arg_int, arg_ptr);
+      break;
+    case U8X8_MSG_DISPLAY_REFRESH:
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_v2_to_display_seq);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/*=================================================*/
+/* GDEP015OC1 */
+/* https://github.com/olikraus/u8g2/issues/454 */
+
+
+static const uint8_t u8x8_d_ssd1607_gd_to_display_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  /*
+0xaa, 0x09, 0x09, 0x19, 0x19, 
+0x11, 0x11, 0x11, 0x11, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 
+
+0x75, 0x77, 0x77, 0x77, 0x07, 
+0x00, 0x00, 0x00, 0x00, 0x00
+measured 1240 ms with IL3830 196x128
+  
+  
+0x02, 0x02, 0x01, 0x11, 0x12, 
+0x12, 0x12, 0x22, 0x22, 0x66, 
+0x69, 0x59, 0x58, 0x99, 0x99, 
+0x88, 0x00, 0x00, 0x00, 0x00, 
+
+0xf8, 0xb4, 0x13, 0x51, 0x35, 
+0x51, 0x51, 0xe9, 0x04, 0x00
+  
+*/
+
+  U8X8_C(0x32),	/* write LUT register*/
+
+  U8X8_A(0x50), U8X8_A(0xAA), U8X8_A(0x55), U8X8_A(0xAA), U8X8_A(0x11), 
+  U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), 
+  U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), 
+  U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), 
+  
+  U8X8_A(0xFF), U8X8_A(0xFF), U8X8_A(0x1F), U8X8_A(0x00), U8X8_A(0x00), 
+  U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00), U8X8_A(0x00),
+
+  U8X8_CA(0x22, 0x04),	/* display update seq. option: clk -> CP -> LUT -> initial display -> pattern display */
+  U8X8_C(0x20),	/* execute sequence */
+  
+  U8X8_DLY(250),	/* delay for 1500ms. The current sequence takes 1300ms */
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  
+  U8X8_DLY(250),
+  U8X8_DLY(250),
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_ssd1607_gd_200x200(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1607_200x200_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_init_seq);    
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave0_seq);
+      u8x8_d_ssd1607_200x200_first_init(u8x8);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_200x200_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_d_ssd1607_draw_tile(u8x8, arg_int, arg_ptr);
+      break;
+    case U8X8_MSG_DISPLAY_REFRESH:
+      u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1607_gd_to_display_seq);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_st7567.c

@@ -0,0 +1,574 @@
+/*
+
+  u8x8_d_st7567.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_st7567_132x64_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a4),		                /* all pixel off, issue 142 */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7567_132x64_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7567_132x64_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7567_132x64_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7567_n_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7567_n_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+/*=====================================================*/
+
+
+static const u8x8_display_info_t u8x8_st7567_132x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 150,	/* */
+  /* pre_chip_disable_wait_ns = */ 50,	/* */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 1, 
+  /* sda_setup_time_ns = */ 50,		/* */
+  /* sck_pulse_width_ns = */ 120,	/* */
+  /* sck_clock_hz = */ 4000000UL,	/* */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,	/* */
+  /* write_pulse_width_ns = */ 80,	/* */
+  /* tile_width = */ 17,		/* width of 17*8=136 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 132,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_d_st7567_132x64_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  
+  U8X8_C(0x0a1),		                /* ADC set to reverse */
+  U8X8_C(0x0c0),		                /* common output mode */
+  // Flipmode
+  //U8X8_C(0x0a0),		                /* ADC set to reverse */
+  //U8X8_C(0x0c8),		                /* common output mode */
+  
+  U8X8_C(0x0a6),		                /* display normal, bit val 0: LCD pixel off. */
+  U8X8_C(0x0a3),		                /* LCD bias 1/7 */
+  /* power on sequence from paxinstruments */
+  U8X8_C(0x028|4),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|6),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|7),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  
+  U8X8_C(0x026),		                /* v0 voltage resistor ratio */
+  U8X8_CA(0x081, 0x027),		/* set contrast, contrast value*/
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+   
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+/* pax instruments 132x64 display */
+uint8_t u8x8_d_st7567_pi_132x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7567_132x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int >> 2 );	/* st7567 has range from 0 to 63 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      /* 
+	The following if condition checks the hardware limits of the st7567 
+	controller: It is not allowed to write beyond the display limits.
+	This is in fact an issue within flip mode.
+      */
+      if ( c + x > 132u )
+      {
+	c = 132u;
+	c -= x;
+      }
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+
+
+/*=====================================================*/
+
+
+
+
+
+static const u8x8_display_info_t u8x8_st7567_jlx12864_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 150,	/* */
+  /* pre_chip_disable_wait_ns = */ 50,	/* */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 1, 
+  /* sda_setup_time_ns = */ 50,		/* */
+  /* sck_pulse_width_ns = */ 120,	/* */
+  /* sck_clock_hz = */ 4000000UL,	/* */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,	/* */
+  /* write_pulse_width_ns = */ 80,	/* */
+  /* tile_width = */ 16,		/* width of 16*8=128 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 4,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_st7567_jlx12864_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  
+  U8X8_C(0x0a1),		                /* ADC set to reverse */
+  U8X8_C(0x0c0),		                /* common output mode */
+  // Flipmode
+  //U8X8_C(0x0a0),		                /* ADC set to reverse */
+  //U8X8_C(0x0c8),		                /* common output mode */
+  
+  U8X8_C(0x0a6),		                /* display normal, bit val 0: LCD pixel off. */
+  U8X8_C(0x0a3),		                /* LCD bias 1/7 */
+  /* power on sequence from paxinstruments */
+  U8X8_C(0x028|4),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|6),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|7),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  
+  U8X8_C(0x023),		                /* v0 voltage resistor ratio */
+  U8X8_CA(0x081, 42>>2),		/* set contrast, contrast value*/
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+   
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+/* JLX12864 display */
+uint8_t u8x8_d_st7567_jlx12864(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7567_jlx12864_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_st7567_jlx12864_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int >> 2 );	/* st7567 has range from 0 to 63 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      /* 
+	The following if condition checks the hardware limits of the st7567 
+	controller: It is not allowed to write beyond the display limits.
+	This is in fact an issue within flip mode.
+      */
+      if ( c + x > 132u )
+      {
+	c = 132u;
+	c -= x;
+      }
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/*=====================================================*/
+
+
+
+static const u8x8_display_info_t u8x8_st7567_enh_dg128064_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 150,	/* */
+  /* pre_chip_disable_wait_ns = */ 50,	/* */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 1, 
+  /* sda_setup_time_ns = */ 50,		/* */
+  /* sck_pulse_width_ns = */ 120,	/* */
+  /* sck_clock_hz = */ 4000000UL,	/* */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,	/* */
+  /* write_pulse_width_ns = */ 80,	/* */
+  /* tile_width = */ 16,		/* width of 16*8=128 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 4,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+static const u8x8_display_info_t u8x8_st7567_enh_dg128064i_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 150,	/* */
+  /* pre_chip_disable_wait_ns = */ 50,	/* */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 1, 
+  /* sda_setup_time_ns = */ 50,		/* */
+  /* sck_pulse_width_ns = */ 120,	/* */
+  /* sck_clock_hz = */ 4000000UL,	/* */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 40,	/* */
+  /* write_pulse_width_ns = */ 80,	/* */
+  /* tile_width = */ 16,		/* width of 16*8=128 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 4,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_st7567_enh_dg128064_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  
+  U8X8_C(0x0a1),		                /* ADC set to reverse */
+  U8X8_C(0x0c0),		                /* common output mode */
+  // Flipmode
+  //U8X8_C(0x0a0),		                /* ADC set to reverse */
+  //U8X8_C(0x0c8),		                /* common output mode */
+  
+  U8X8_C(0x0a6),		                /* display normal, bit val 0: LCD pixel off. */
+  U8X8_C(0x0a2),		                /* LCD bias 1/9 */
+  /* power on sequence from paxinstruments */
+  U8X8_C(0x028|4),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|6),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  U8X8_C(0x028|7),		                /* all power  control circuits on */
+  U8X8_DLY(50),
+  
+  U8X8_C(0x023),		                /* v0 voltage resistor ratio */
+  U8X8_CA(0x081, 200>>2),		/* set contrast, contrast value*/
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+   
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+/* ENH-DG128064 transparent display */
+static uint8_t u8x8_d_st7567_enh_dg128064_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7567_enh_dg128064_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_st7567_enh_dg128064_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_powersave1_seq);
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int >> 2 );	/* st7567 has range from 0 to 63 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      /* 
+	The following if condition checks the hardware limits of the st7567 
+	controller: It is not allowed to write beyond the display limits.
+	This is in fact an issue within flip mode.
+      */
+      if ( c + x > 132u )
+      {
+	c = 132u;
+	c -= x;
+      }
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+uint8_t u8x8_d_st7567_enh_dg128064(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7567_enh_dg128064_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_n_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_n_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+    default:
+      return u8x8_d_st7567_enh_dg128064_generic(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+uint8_t u8x8_d_st7567_enh_dg128064i(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7567_enh_dg128064i_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7567_132x64_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+    default:
+      return u8x8_d_st7567_enh_dg128064_generic(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_st7588.c

@@ -0,0 +1,256 @@
+/*
+
+  u8x8_d_st7588.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+  ST7588
+    - has 4 different I2C addresses 
+    - I2C protocol is identical to SSD13xx
+  
+*/
+
+
+#include "u8x8.h"
+
+/* function set, bit 2: power down, bit 3: MY, bit 4: MX, bit 5: must be 1 */
+#define FS (0x020)
+
+/* not a real power down for the ST7588... just a display off */
+static const uint8_t u8x8_d_st7588_128x64_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C( FS | 0x00 ),			/* select 00 commands */
+  //U8X8_C( 0x08 ),				/* display off */
+  U8X8_C( 0x0c ),				/* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7588_128x64_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C( FS | 0x00 ),			/* select 00 commands */
+  U8X8_C( 0x08 ),				/* display off */
+  //U8X8_C( 0x0c ),				/* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+
+
+static uint8_t u8x8_d_st7588_128x64_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7588_128x64_display_info);
+      break;
+    */
+    /* handled by the calling function
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_st7588_128x64_init_seq);    
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7588_128x64_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7588_128x64_powersave1_seq);
+
+      /* restore orientation */
+      if ( u8x8->x_offset == 0 )
+	u8x8_cad_SendCmd(u8x8, FS );	/* select 00 commands */
+      else
+	u8x8_cad_SendCmd(u8x8, FS ^ 0x018 );	/* select 00 commands */
+      
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+
+      u8x8_cad_StartTransfer(u8x8);
+      
+      u8x8_cad_SendCmd(u8x8, FS );
+      u8x8_cad_SendArg(u8x8, 4 | (arg_int>>7) );
+      u8x8_cad_SendCmd(u8x8, FS | 1);
+      u8x8_cad_SendArg(u8x8, 0x080 | arg_int );
+      
+      /* restore orientation */
+      if ( u8x8->x_offset == 0 )
+	u8x8_cad_SendCmd(u8x8, FS );	/* select 00 commands */
+      else
+	u8x8_cad_SendCmd(u8x8, FS ^ 0x018 );	/* select 00 commands */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      
+      u8x8_cad_StartTransfer(u8x8);
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;    
+      x *= 8;
+      
+      x += u8x8->x_offset;
+    
+      if ( u8x8->x_offset == 0 )
+	u8x8_cad_SendCmd(u8x8, FS );	/* select 00 commands */
+      else
+	u8x8_cad_SendCmd(u8x8, FS ^ 0x018 );	/* select 00 commands */
+	
+      u8x8_cad_SendCmd(u8x8, 0x040 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+      u8x8_cad_SendCmd(u8x8, 0x0e0 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0f0 | (x>>4) );
+    
+      
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	u8x8_cad_SendData(u8x8, c*8, ptr); 	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=============================================*/
+
+static const u8x8_display_info_t u8x8_st7588_128x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 150,
+  /* pre_chip_disable_wait_ns = */ 30,
+  /* reset_pulse_width_ms = */ 5, 	
+  /* post_reset_wait_ms = */ 5, 		/**/
+  /* sda_setup_time_ns = */ 60,		/* */
+  /* sck_pulse_width_ns = */ 60,	/*  */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,	/* 400KHz */
+  /* data_setup_time_ns = */ 80,
+  /* write_pulse_width_ns = */ 50,	
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,	/* must be 0, because this is checked also for normal mode */
+  /* flipmode_x_offset = */ 4,		
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+
+
+static const uint8_t u8x8_d_st7588_128x64_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_C( FS | 0x03 ),			/* select 11 commands */
+  U8X8_C( 0x03 ),				/* software reset */
+
+  U8X8_C( FS | 0x00 ),			/* select 00 commands */
+  U8X8_C( 0x08 ),				/* display off */
+  //U8X8_C( 0x0c ),				/* display on */
+  
+  U8X8_C( FS | 0x01 ),			/* select 01 commands */
+  U8X8_C( 0x08 ),				/* display confguration */
+  U8X8_C( 0x12 ),				/* bias 1/9 */
+  U8X8_C( 0x8f ),				/* Vop, lower 7 bits */
+  
+  U8X8_C( FS | 0x00 ),			/* select 00 commands */
+  U8X8_C( 0x05),				/* Bit 0 contains high/low range for Vop */
+  
+  
+  U8X8_C( FS | 0x03 ),			/* select 11 commands */
+  U8X8_C( 0x0b),				/* Frame Rate: 73 Hz */
+  
+  
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const uint8_t u8x8_d_st7588_jlx12864_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C( FS ),					/* normal mode */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7588_jlx12864_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C( FS ^ 0x018 ),					/* normal mode */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_st7588_jlx12864(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  if ( u8x8_d_st7588_128x64_generic(u8x8, msg, arg_int, arg_ptr) != 0 )
+    return 1;
+  if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
+  {
+    u8x8_SetI2CAddress(u8x8, 0x07e);		/* the JLX12864 has 0x07e as a default address for I2C */
+    u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7588_128x64_display_info);
+    return 1;
+  }
+  else if ( msg == U8X8_MSG_DISPLAY_INIT )
+  {
+    u8x8_d_helper_display_init(u8x8);
+    u8x8_cad_SendSequence(u8x8, u8x8_d_st7588_128x64_init_seq);    
+    return 1;
+  }
+  else if  ( msg == U8X8_MSG_DISPLAY_SET_FLIP_MODE )
+  {
+    if ( arg_int == 0 )
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_st7588_jlx12864_flip0_seq);
+      u8x8->x_offset = u8x8->display_info->default_x_offset;
+    }
+    else
+    {
+      u8x8_cad_SendSequence(u8x8, u8x8_d_st7588_jlx12864_flip1_seq);
+      u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+    }
+    return 1;
+  }
+  return 0;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_st7920.c

@@ -0,0 +1,233 @@
+/*
+
+  u8x8_d_st7920.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  The ST7920 controller does not support hardware graphics flip.
+  Contrast adjustment is done by an external resistor --> no support for contrast adjustment
+  
+  
+*/
+#include "u8x8.h"
+
+
+
+static const uint8_t u8x8_d_st7920_init_seq[] = {
+    
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(10),
+  
+  U8X8_C(0x038),            			/* 8 Bit interface (DL=1), basic instruction set (RE=0) */
+  U8X8_C(0x008),		                /* display on, cursor & blink off; 0x08: all off */
+  U8X8_C(0x006),		                /* Entry mode: Cursor move to right ,DDRAM address counter (AC) plus 1, no shift  */  
+  U8X8_C(0x002),		                /* disable scroll, enable CGRAM adress  */
+  U8X8_C(0x001),		                /* clear RAM, needs 1.6 ms */
+  U8X8_DLY(4),					/* delay 2ms */
+
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7920_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x038),            			/* 8 Bit interface (DL=1), basic instruction set (RE=0) */
+  U8X8_C(0x00c),		                /* display on, cursor & blink off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_st7920_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x038),            			/* 8 Bit interface (DL=1), basic instruction set (RE=0) */
+  U8X8_C(0x008),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_st7920_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c, i;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
+    /*
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      break;
+    */
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_st7920_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7920_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_st7920_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y*=8;
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x /= 2;		/* not sure whether this is a clever idea, problem is, the ST7920 can address only every second tile */
+    
+      if ( y >= 32 )	/* this is the adjustment for 128x64 displays */
+      {
+	y-=32;
+	x+=8;
+      }
+    
+      u8x8_cad_StartTransfer(u8x8);
+        
+
+      /* 
+	Tile structure is reused here for the ST7920, however u8x8 is not supported 
+	tile_ptr points to data which has cnt*8 bytes (same as SSD1306 tiles)
+	Buffer is expected to have 8 lines of code fitting to the ST7920 internal memory
+	"cnt" includes the number of horizontal bytes. width is equal to cnt*8
+	Also important: Width must be a multiple of 16 (ST7920 requirement), so cnt must be even.
+	
+	TODO: Consider arg_int, however arg_int is not used by u8g2
+      */
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;	/* data ptr to the tiles */
+      /* The following byte is sent to allow the ST7920 to sync up with the data */
+      /* it solves some issues with garbage data */
+      u8x8_cad_SendCmd(u8x8, 0x03e );	/* enable extended mode */
+      u8x8_cad_SendCmd(u8x8, 0x03e );	/* enable extended mode, issue 487 */
+      for( i = 0; i < 8; i++ )
+      {
+	//u8x8_cad_SendCmd(u8x8, 0x03e );	/* enable extended mode */
+	u8x8_cad_SendCmd(u8x8, 0x080 | (y+i) );      /* y pos  */
+	u8x8_cad_SendCmd(u8x8, 0x080 | x );      /* set x pos */
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+
+	//u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes, send one line of data */
+	ptr += c;
+	//u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+      }
+
+      u8x8_cad_EndTransfer(u8x8);
+
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+static const u8x8_display_info_t u8x8_st7920_192x32_display_info =
+{
+  /* chip_enable_level = */ 1,
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 5,
+  /* pre_chip_disable_wait_ns = */ 5,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	/* datasheet ST7920 */
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 3,		/* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0), 18 Aug 16: changed from 1 to 3 which works for 101 */
+	/* Arduino mode 3: aktive low clock, but use rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,
+  /* write_pulse_width_ns = */ 40,
+  /* tile_width = */ 24,
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 192,
+  /* pixel_height = */ 32
+};
+
+static const u8x8_display_info_t u8x8_st7920_128x64_display_info =
+{
+  /* chip_enable_level = */ 1,
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 5,
+  /* pre_chip_disable_wait_ns = */ 5,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	/* datasheet ST7920 */
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* ST7920+Due work with 1MHz but not with 2MHz, ST7920+Uno works with 2MHz */
+  /* spi_mode = */ 3,		/* active high, rising edge, 18 Aug 16: changed from 1 to 3 which works for 101  */
+  /* in theory mode 3 should be correct  */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,
+  /* write_pulse_width_ns = */ 40,
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_st7920_192x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_192x32_display_info);
+      break;
+    default:
+      return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+uint8_t u8x8_d_st7920_128x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7920_128x64_display_info);
+      break;
+    default:
+      return u8x8_d_st7920_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+
+  
+
+  

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_t6963.c

@@ -0,0 +1,546 @@
+/*
+
+  u8x8_d_t6963.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  The t6963 controller does not support hardware graphics flip.
+  Contrast adjustment is done by an external resistor --> no support for contrast adjustment
+  
+  
+*/
+#include "u8x8.h"
+
+
+
+static const uint8_t u8x8_d_t6963_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x098),                            /* mode register: Display Mode, Graphics on, Text off, Cursor off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_t6963_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x090),                             /* All Off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_t6963_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t c, i;
+  uint16_t y;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    /* U8X8_MSG_DISPLAY_SETUP_MEMORY is handled by the calling function */
+    /*
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_t6963_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_t6963_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      y = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      y*=8;
+      y*= u8x8->display_info->tile_width;
+      /* x = ((u8x8_tile_t *)arg_ptr)->x_pos; x is ignored... no u8x8 support */
+      //u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+      u8x8_cad_StartTransfer(u8x8);
+      //u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+      /* 
+	Tile structure is reused here for the t6963, however u8x8 is not supported 
+	tile_ptr points to data which has cnt*8 bytes (same as SSD1306 tiles)
+	Buffer is expected to have 8 lines of code fitting to the t6963 internal memory
+	"cnt" includes the number of horizontal bytes. width is equal to cnt*8
+	
+	TODO: Consider arg_int, however arg_int is not used by u8g2
+      */
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;	/* data ptr to the tiles */
+      for( i = 0; i < 8; i++ )
+      {
+	u8x8_cad_SendArg(u8x8, y&255);
+	u8x8_cad_SendArg(u8x8, y>>8);
+	u8x8_cad_SendCmd(u8x8, 0x024 );	/* set adr */
+	u8x8_cad_SendCmd(u8x8, 0x0b0 );	/* auto write start */
+	
+	
+	//c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes, send one line of data */
+	
+	u8x8_cad_SendCmd(u8x8, 0x0b2 );	/* auto write reset */
+	ptr += u8x8->display_info->tile_width;
+	y += u8x8->display_info->tile_width;
+      }
+
+      u8x8_cad_EndTransfer(u8x8);
+      //u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*=============================================*/
+
+
+static const u8x8_display_info_t u8x8_t6963_240x128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 110,	/* T6963 Datasheet p30 */
+  /* pre_chip_disable_wait_ns = */ 100,	/* T6963 Datasheet p30 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 80,
+  /* write_pulse_width_ns = */ 80,
+  /* tile_width = */ 30,
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 128
+};
+
+/* 240x128 */
+static const uint8_t u8x8_d_t6963_240x128_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+  
+  U8X8_AAC(0x00,0x00,0x021),	/* low, high, set cursor pos */
+  U8X8_AAC(0x00,0x00,0x022),	/* low, high, set offset */
+  U8X8_AAC(0x00,0x00,0x040),	/* low, high, set text home */
+  U8X8_AAC(240/8,0x00,0x041),	/* low, high, set text columns */
+  U8X8_AAC(0x00,0x00,0x042),	/* low, high, graphics home */  
+  U8X8_AAC(240/8,0x00,0x043),	/* low, high, graphics columns */
+  U8X8_DLY(2),					/* delay 2ms */
+  // mode set
+  // 0x080: Internal CG, OR Mode
+  // 0x081: Internal CG, EXOR Mode
+  // 0x083: Internal CG, AND Mode
+  // 0x088: External CG, OR Mode
+  // 0x089: External CG, EXOR Mode
+  // 0x08B: External CG, AND Mode
+  U8X8_C(0x080),            			/* mode register: OR Mode, Internal Character Mode */
+  // display mode
+  // 0x090: Display off
+  // 0x094: Graphic off, text on, cursor off, blink off
+  // 0x096: Graphic off, text on, cursor on, blink off
+  // 0x097: Graphic off, text on, cursor on, blink on
+  // 0x098: Graphic on, text off, cursor off, blink off
+  // 0x09a: Graphic on, text off, cursor on, blink off
+  // ...
+  // 0x09c: Graphic on, text on, cursor off, blink off
+  // 0x09f: Graphic on, text on, cursor on, blink on
+  U8X8_C(0x090),                             /* All Off */
+  U8X8_AAC(0x00,0x00,0x024),	/* low, high, set adr pointer */
+  
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+};
+
+uint8_t u8x8_d_t6963_240x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_t6963_240x128_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_t6963_240x128_init_seq);
+      break;
+    default:
+      return u8x8_d_t6963_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+
+/*=============================================*/
+
+static const u8x8_display_info_t u8x8_t6963_240x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 110,	/* T6963 Datasheet p30 */
+  /* pre_chip_disable_wait_ns = */ 100,	/* T6963 Datasheet p30 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 80,
+  /* write_pulse_width_ns = */ 80,
+  /* tile_width = */ 30,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 64
+};
+
+
+/* 240x64 */
+static const uint8_t u8x8_d_t6963_240x64_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+  
+  U8X8_AAC(0x00,0x00,0x021),	/* low, high, set cursor pos */
+  U8X8_AAC(0x00,0x00,0x022),	/* low, high, set offset */
+  U8X8_AAC(0x00,0x00,0x040),	/* low, high, set text home */
+  U8X8_AAC(240/8,0x00,0x041),	/* low, high, set text columns */
+  U8X8_AAC(0x00,0x00,0x042),	/* low, high, graphics home */  
+  U8X8_AAC(240/8,0x00,0x043),	/* low, high, graphics columns */
+  U8X8_DLY(2),					/* delay 2ms */
+  // mode set
+  // 0x080: Internal CG, OR Mode
+  // 0x081: Internal CG, EXOR Mode
+  // 0x083: Internal CG, AND Mode
+  // 0x088: External CG, OR Mode
+  // 0x089: External CG, EXOR Mode
+  // 0x08B: External CG, AND Mode
+  U8X8_C(0x080),            			/* mode register: OR Mode, Internal Character Mode */
+  // display mode
+  // 0x090: Display off
+  // 0x094: Graphic off, text on, cursor off, blink off
+  // 0x096: Graphic off, text on, cursor on, blink off
+  // 0x097: Graphic off, text on, cursor on, blink on
+  // 0x098: Graphic on, text off, cursor off, blink off
+  // 0x09a: Graphic on, text off, cursor on, blink off
+  // ...
+  // 0x09c: Graphic on, text on, cursor off, blink off
+  // 0x09f: Graphic on, text on, cursor on, blink on
+  U8X8_C(0x090),                             /* All Off */
+  U8X8_AAC(0x00,0x00,0x024),	/* low, high, set adr pointer */
+  
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+};
+
+uint8_t u8x8_d_t6963_240x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_t6963_240x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_t6963_240x64_init_seq);
+      break;
+    default:
+      return u8x8_d_t6963_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+
+/*=============================================*/
+
+
+
+static const u8x8_display_info_t u8x8_t6963_256x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 110,	/* T6963 Datasheet p30 */
+  /* pre_chip_disable_wait_ns = */ 100,	/* T6963 Datasheet p30 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 80,
+  /* write_pulse_width_ns = */ 80,
+  /* tile_width = */ 32,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 256,
+  /* pixel_height = */ 64
+};
+
+/* 256x64 */
+static const uint8_t u8x8_d_t6963_256x64_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+  
+  U8X8_AAC(0x00,0x00,0x021),	/* low, high, set cursor pos */
+  U8X8_AAC(0x00,0x00,0x022),	/* low, high, set offset */
+  U8X8_AAC(0x00,0x00,0x040),	/* low, high, set text home */
+  U8X8_AAC(256/8,0x00,0x041),	/* low, high, set text columns */
+  U8X8_AAC(0x00,0x00,0x042),	/* low, high, graphics home */  
+  U8X8_AAC(256/8,0x00,0x043),	/* low, high, graphics columns */
+  U8X8_DLY(2),					/* delay 2ms */
+  // mode set
+  // 0x080: Internal CG, OR Mode
+  // 0x081: Internal CG, EXOR Mode
+  // 0x083: Internal CG, AND Mode
+  // 0x088: External CG, OR Mode
+  // 0x089: External CG, EXOR Mode
+  // 0x08B: External CG, AND Mode
+  U8X8_C(0x080),            			/* mode register: OR Mode, Internal Character Mode */
+  // display mode
+  // 0x090: Display off
+  // 0x094: Graphic off, text on, cursor off, blink off
+  // 0x096: Graphic off, text on, cursor on, blink off
+  // 0x097: Graphic off, text on, cursor on, blink on
+  // 0x098: Graphic on, text off, cursor off, blink off
+  // 0x09a: Graphic on, text off, cursor on, blink off
+  // ...
+  // 0x09c: Graphic on, text on, cursor off, blink off
+  // 0x09f: Graphic on, text on, cursor on, blink on
+  U8X8_C(0x090),                             /* All Off */
+  U8X8_AAC(0x00,0x00,0x024),	/* low, high, set adr pointer */
+  
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+};
+
+uint8_t u8x8_d_t6963_256x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_t6963_256x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_t6963_256x64_init_seq);
+      break;
+    default:
+      return u8x8_d_t6963_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+/*=============================================*/
+
+static const u8x8_display_info_t u8x8_t6963_128x64_display_info =
+{
+  /* chip_enable_level = */ 1,
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* T6963 Datasheet p30 */
+  /* pre_chip_disable_wait_ns = */ 100,	/* T6963 Datasheet p30 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 80,
+  /* write_pulse_width_ns = */ 80,
+  /* tile_width = */ 16,
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+/* 128x64 */
+static const uint8_t u8x8_d_t6963_128x64_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+  
+  U8X8_AAC(0x00,0x00,0x021),	/* low, high, set cursor pos */
+  U8X8_AAC(0x00,0x00,0x022),	/* low, high, set offset */
+  U8X8_AAC(0x00,0x00,0x040),	/* low, high, set text home */
+  U8X8_AAC(128/8,0x00,0x041),	/* low, high, set text columns */
+  U8X8_AAC(0x00,0x00,0x042),	/* low, high, graphics home */  
+  U8X8_AAC(128/8,0x00,0x043),	/* low, high, graphics columns */
+  U8X8_DLY(2),					/* delay 2ms */
+  // mode set
+  // 0x080: Internal CG, OR Mode
+  // 0x081: Internal CG, EXOR Mode
+  // 0x083: Internal CG, AND Mode
+  // 0x088: External CG, OR Mode
+  // 0x089: External CG, EXOR Mode
+  // 0x08B: External CG, AND Mode
+  U8X8_C(0x080),            			/* mode register: OR Mode, Internal Character Mode */
+  // display mode
+  // 0x090: Display off
+  // 0x094: Graphic off, text on, cursor off, blink off
+  // 0x096: Graphic off, text on, cursor on, blink off
+  // 0x097: Graphic off, text on, cursor on, blink on
+  // 0x098: Graphic on, text off, cursor off, blink off
+  // 0x09a: Graphic on, text off, cursor on, blink off
+  // ...
+  // 0x09c: Graphic on, text on, cursor off, blink off
+  // 0x09f: Graphic on, text on, cursor on, blink on
+  U8X8_C(0x090),                             /* All Off */
+  U8X8_AAC(0x00,0x00,0x024),	/* low, high, set adr pointer */
+  
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+};
+
+uint8_t u8x8_d_t6963_128x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_t6963_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_t6963_128x64_init_seq);
+      break;
+    default:
+      return u8x8_d_t6963_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+/*=============================================*/
+
+static const u8x8_display_info_t u8x8_t6963_160x80_display_info =
+{
+  /* chip_enable_level = */ 1,
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* T6963 Datasheet p30 */
+  /* pre_chip_disable_wait_ns = */ 100,	/* T6963 Datasheet p30 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 20,		
+  /* sck_pulse_width_ns = */  140,	
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 80,
+  /* write_pulse_width_ns = */ 80,
+  /* tile_width = */ 20,
+  /* tile_hight = */ 10,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 160,
+  /* pixel_height = */ 80
+};
+
+/* 128x64 */
+static const uint8_t u8x8_d_t6963_160x80_init_seq[] = {
+  U8X8_DLY(100),
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(100),
+  
+  U8X8_AAC(0x00,0x00,0x021),	/* low, high, set cursor pos */
+  U8X8_AAC(0x00,0x00,0x022),	/* low, high, set offset */
+  U8X8_AAC(0x00,0x00,0x040),	/* low, high, set text home */
+  U8X8_AAC(160/8,0x00,0x041),	/* low, high, set text columns */
+  U8X8_AAC(0x00,0x00,0x042),	/* low, high, graphics home */  
+  U8X8_AAC(160/8,0x00,0x043),	/* low, high, graphics columns */
+  U8X8_DLY(2),					/* delay 2ms */
+  // mode set
+  // 0x080: Internal CG, OR Mode
+  // 0x081: Internal CG, EXOR Mode
+  // 0x083: Internal CG, AND Mode
+  // 0x088: External CG, OR Mode
+  // 0x089: External CG, EXOR Mode
+  // 0x08B: External CG, AND Mode
+  U8X8_C(0x080),            			/* mode register: OR Mode, Internal Character Mode */
+  // display mode
+  // 0x090: Display off
+  // 0x094: Graphic off, text on, cursor off, blink off
+  // 0x096: Graphic off, text on, cursor on, blink off
+  // 0x097: Graphic off, text on, cursor on, blink on
+  // 0x098: Graphic on, text off, cursor off, blink off
+  // 0x09a: Graphic on, text off, cursor on, blink off
+  // ...
+  // 0x09c: Graphic on, text on, cursor off, blink off
+  // 0x09f: Graphic on, text on, cursor on, blink on
+  U8X8_C(0x090),                             /* All Off */
+  U8X8_AAC(0x00,0x00,0x024),	/* low, high, set adr pointer */
+  
+  U8X8_DLY(100),
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_DLY(100),
+};
+
+uint8_t u8x8_d_t6963_160x80(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_t6963_160x80_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_t6963_160x80_init_seq);
+      break;
+    default:
+      return u8x8_d_t6963_common(u8x8, msg, arg_int, arg_ptr);
+  }
+  return 1;
+}
+
+
+
+  
+
+  

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1601.c

@@ -0,0 +1,188 @@
+/*
+
+  u8x8_d_uc1601.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  This is for the uc1601s controller
+  
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_uc1601_128x32_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1601_128x32_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1601_128x32_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c4),				/* bit 1: MX, bit 2: MY */
+  U8X8_C(0x060),		                /* set display start line to 32 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1601_128x32_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c2),				/* bit 1: MX, bit 2: MY */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const u8x8_display_info_t u8x8_uc1601_128x32_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 1,	/* uc1601 datasheet, page 46 */
+  /* pre_chip_disable_wait_ns = */ 5,	/* uc1601 datasheet, page 46 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 12,		/* uc1601 datasheet, page 44 */
+  /* sck_pulse_width_ns = */ 15,	/* uc1601 datasheet, page 44 */
+  /* sck_clock_hz = */ 2000000UL,	/* */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 1,
+  /* data_setup_time_ns = */ 60,	/* uc1601 datasheet, page 43 */
+  /* write_pulse_width_ns = */ 80,	/* uc1601 datasheet, page 43 */
+  /* tile_width = */ 16,		
+  /* tile_hight = */ 4,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 4,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 32
+};
+
+static const uint8_t u8x8_d_uc1601_128x32_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_C(0x0eb),            			/* LCD Bias: 0xe8: 6, 0xe9: 7, 0xea: 8, 0xeb: 9 */
+  //U8X8_C(0x023),            			/* 0x020...0x023 only for UC1601, not for UC1601s */
+	
+
+  //U8X8_C(0x02e),            			/* LCD Load + Internal Charge Pump (default: 0x2e) */
+  U8X8_C(0x024),		                /* Temperature Compenstation, default: 0x24 */
+  U8X8_C(0x089),		                /* RAM address ctrl, default: 0x89 */
+  U8X8_C(0x0c4),		                /* RAM mapping ctrl */
+  U8X8_C(0x0a0),		                /* Frame Rate, 0x0a0 or 0x0a1 */
+  U8X8_CA(0x081, 0x0df),		/* set contrast */
+  U8X8_C(0x02e),            			/* LCD Load + Internal Charge Pump (default: 0x2e) */	
+  U8X8_C(0x060),		                /* set display start line to 32 */
+  
+  U8X8_C(0x0a6),		                /* normal display */
+   
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_uc1601_128x32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1601_128x32_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1601_128x32_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1601_128x32_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1601_128x32_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1601_128x32_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1601_128x32_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int );	/* uc1601 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1604.c

@@ -0,0 +1,240 @@
+/*
+
+  u8x8_d_uc1604.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+
+static const uint8_t u8x8_d_uc1604_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_DLY(20),			
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_DLY(20),				/* during setup, it seems that the startup is more reliable when sending this cmd twice */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_DLY(50),				/* startup takes some time */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1604_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off, enter sleep mode */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1604_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c4),            			/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1604_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c2),            			/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_uc1604_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+   
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+    
+      y = ((u8x8_tile_t *)arg_ptr)->y_pos;
+      y += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (y&15));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    /*	handled in the calling procedure 
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1604_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_init_seq);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1604_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1604_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1604_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1604_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int  );	/* uc1604 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*================================================*/
+/* JLX19264 */
+
+/* 
+  timings from uc1608 
+
+  UC1604 has two chip select inputs (CS0 and CS1).
+  CS0 is low active, CS1 is high active. It will depend on the display
+  module whether the display has a is low or high active chip select.
+
+*/
+static const u8x8_display_info_t u8x8_uc1604_192x64_display_info =
+{
+  /* chip_enable_level = */ 0,	/* JLX19264G uses CS0, which is low active CS*/
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 20,	
+  /* pre_chip_disable_wait_ns = */ 20,	
+  /* reset_pulse_width_ms = */ 1, 	
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	
+  /* write_pulse_width_ns = */ 35,	
+  /* tile_width = */ 24,		/* width of 24*8=192 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,	/* reused as y page offset */
+  /* flipmode_x_offset = */ 0,	/* reused as y page offset */
+  /* pixel_width = */ 192,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_d_uc1604_jlx19264_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_DLY(200),
+  U8X8_DLY(200),
+
+  U8X8_C(0x02f),            			/* power on, Bit 2 PC2=1 (internal charge pump), Bits 0/1: cap of panel */
+  U8X8_DLY(200),
+  U8X8_DLY(200),
+  
+  U8X8_CA(0x081, 0x052),		/* set contrast, JLX19264G suggestion: 0x045 */
+  U8X8_C(0x0eb),            			/* LCD bias Bits 0/1: 00=6 01=7, 10=8, 11=9 */
+
+  
+  //U8X8_C(0x023),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+  //U8X8_C(0x027),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+
+  U8X8_C(0x0c4),            			/* Map control, Bit 2: MY=1, Bit 1: MX=0 */
+  U8X8_C(0x0a0),            			/* 0xa0: 76Hz FPS, controller default: 0x0a1: 95Hz FPS */
+  
+  
+  U8X8_C(0x040),            			/* set scroll line to 0 */
+  U8X8_C(0x089),            			/* RAM access control (controller default: 0x089)*/
+  
+  
+  U8X8_C(0x000),		                /* column low nibble */
+  U8X8_C(0x010),		                /* column high nibble */  
+  U8X8_C(0x0b0),		                /* page adr  */
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_uc1604_jlx19264(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1604_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1604_192x64_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1604_jlx19264_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1608.c

@@ -0,0 +1,393 @@
+/*
+
+  u8x8_d_uc1608.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+
+static const uint8_t u8x8_d_uc1608_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1608_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off, enter sleep mode */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1608_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c8),            			/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1608_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c4),            			/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_uc1608_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+   
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+    
+      y = ((u8x8_tile_t *)arg_ptr)->y_pos;
+      y += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (y&15));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    /*	handled in the calling procedure 
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1608_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_init_seq);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1608_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1608_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1608_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1608_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int  );	/* uc1608 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*================================================*/
+/* ERC24064-1 */
+
+/*
+  The UC1608 has only one high active chip select input.
+  UC1604, UC1610 and UC1611 have two chip select inputs.
+*/
+
+static const u8x8_display_info_t u8x8_uc1608_240x64_display_info =
+{
+  /* chip_enable_level = */ 1,	/* uc1608 has high active CS */
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* uc1608 datasheet, page 39, actually 0 */
+  /* pre_chip_disable_wait_ns = */ 20,	/* uc1608 datasheet, page 39 */
+  /* reset_pulse_width_ms = */ 1, 	/* uc1608 datasheet, page 42 */
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		/* uc1608 datasheet, page 41 */
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/* uc1608 datasheet, page 39 */
+  /* write_pulse_width_ns = */ 35,	/* uc1608 datasheet, page 39 */
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,	/* reused as y page offset */
+  /* flipmode_x_offset = */ 4,	/* reused as y page offset */
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_d_uc1608_erc24064_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_DLY(200),
+
+  U8X8_C(0x023),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+  //U8X8_C(0x027),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+
+  U8X8_C(0x0c8),            			/* Map control, Bit 3: MY=1, Bit 2: MX=0, Bit 0: MSF =0 */
+  U8X8_C(0x0e8),            			/* LCD bias Bits 0/1: 00=10.7 01=10.3, 10=12.0, 11=12.7 */
+  
+  U8X8_C(0x02f),            			/* power on, Bit 2 PC2=1 (internal charge pump), Bits 0/1: cap of panel */
+  U8X8_DLY(50),
+  
+  U8X8_C(0x040),            			/* set display start line to 0 */
+  U8X8_C(0x090),            			/* no fixed lines */
+  U8X8_C(0x089),            			/* RAM access control */
+  
+  U8X8_CA(0x081, 0x014),		/* set contrast, ERC24064-1 default: 0x040 */
+  
+  U8X8_C(0x000),		                /* column low nibble */
+  U8X8_C(0x010),		                /* column high nibble */  
+  U8X8_C(0x0b0),		                /* page adr  */
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_uc1608_erc24064(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1608_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1608_240x64_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1608_erc24064_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+
+/*================================================*/
+/* experimental implementation for the uc1608 240x128, not referenced in codebuild */
+
+static const u8x8_display_info_t u8x8_uc1608_240x128_display_info =
+{
+  /* chip_enable_level = */ 1,	/* uc1608 has high active CS */
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* uc1608 datasheet, page 39, actually 0 */
+  /* pre_chip_disable_wait_ns = */ 20,	/* uc1608 datasheet, page 39 */
+  /* reset_pulse_width_ms = */ 1, 	/* uc1608 datasheet, page 42 */
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		/* uc1608 datasheet, page 41 */
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/* uc1608 datasheet, page 39 */
+  /* write_pulse_width_ns = */ 35,	/* uc1608 datasheet, page 39 */
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,	/* reused as y page offset */
+  /* flipmode_x_offset = */ 0,	/* reused as y page offset */
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 128
+};
+
+static const uint8_t u8x8_d_uc1608_240x128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_DLY(200),
+
+  //U8X8_C(0x023),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+  U8X8_C(0x026),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+
+  U8X8_C(0x0c8),            			/* Map control, Bit 3: MY=1, Bit 2: MX=0, Bit 0: MSF =0 */
+  U8X8_C(0x0ea),            			/* LCD bias Bits 0/1: 00=10.7 01=10.3, 10=12.0, 11=12.7 */
+							/* maybe 0x0eb??? */
+  
+  U8X8_C(0x02f),            			/* power on, Bit 2 PC2=1 (internal charge pump), Bits 0/1: cap of panel */
+  U8X8_DLY(50),
+  
+  U8X8_C(0x040),            			/* set display start line to 0 */
+  U8X8_C(0x090),            			/* no fixed lines */
+  U8X8_C(0x089),            			/* RAM access control */
+  
+  U8X8_CA(0x081, 0x072),		/* set contrast  */
+  
+  U8X8_C(0x000),		                /* column low nibble */
+  U8X8_C(0x010),		                /* column high nibble */  
+  U8X8_C(0x0b0),		                /* page adr  */
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_uc1608_240x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1608_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1608_240x128_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1608_240x128_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+/*================================================*/
+/* experimental implementation for the uc1608 erc240x120 */
+
+static const u8x8_display_info_t u8x8_uc1608_erc240120_display_info =
+{
+  /* chip_enable_level = */ 1,	/* uc1608 has high active CS */
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* uc1608 datasheet, page 39, actually 0 */
+  /* pre_chip_disable_wait_ns = */ 20,	/* uc1608 datasheet, page 39 */
+  /* reset_pulse_width_ms = */ 1, 	/* uc1608 datasheet, page 42 */
+  /* post_reset_wait_ms = */ 10, 	
+  /* sda_setup_time_ns = */ 30,		/* uc1608 datasheet, page 41 */
+  /* sck_pulse_width_ns = */ 65,	/* half of cycle time  */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/* uc1608 datasheet, page 39 */
+  /* write_pulse_width_ns = */ 35,	/* uc1608 datasheet, page 39 */
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 15,
+  /* default_x_offset = */ 1,	/* reused as y page offset */
+  /* flipmode_x_offset = */ 0,	/* reused as y page offset */
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 120
+};
+
+/* http://www.buydisplay.com/download/democode/ERC240120-1_DemoCode.txt */
+static const uint8_t u8x8_d_uc1608_erc240120_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_DLY(200),
+
+  //U8X8_C(0x023),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+  U8X8_C(0x026),            			/* Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128 */
+
+  U8X8_C(0x0c8),            			/* Map control, Bit 3: MY=1, Bit 2: MX=0, Bit 0: MSF =0 */
+  U8X8_C(0x0ea),            			/* LCD bias Bits 0/1: 00=10.7 01=10.3, 10=12.0, 11=12.7 */
+							/* according to DemoCode.txt */
+  
+  U8X8_C(0x02f),            			/* power on, Bit 2 PC2=1 (internal charge pump), Bits 0/1: cap of panel */
+  U8X8_DLY(50),
+  
+  U8X8_C(0x040),            			/* set display start line to 0 */
+  U8X8_C(0x090),            			/* no fixed lines */
+  U8X8_C(0x089),            			/* RAM access control */
+  
+  //U8X8_CA(0x081, 46),			/* set contrast, 46 according to  DemoCode.txt */
+  U8X8_CA(0x081, 80),			/* */
+  
+  U8X8_C(0x000),		                /* column low nibble */
+  U8X8_C(0x010),		                /* column high nibble */  
+  U8X8_C(0x0b0),		                /* page adr  */
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_uc1608_erc240120(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1608_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1608_erc240120_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1608_erc240120_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+/*================================================*/

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1610.c

@@ -0,0 +1,304 @@
+/*
+
+  u8x8_d_uc1610.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+  cad001
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_uc1610_dogxl160_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_CA(0x0f1, 0x067),		/* set COM end (display height-1) */
+  U8X8_C(0x0c0),            			/* SEG & COM normal */
+  U8X8_C(0x040),            			/* set scroll line lsb to zero */
+  U8X8_C(0x050),            			/* set scroll line msb to zero */
+  U8X8_C(0x02b),            			/* set panelloading */
+  U8X8_C(0x0eb),            			/* set bias 1/2 */  
+  U8X8_CA(0x081, 0x05f),            	/* set contrast */
+  
+  /*
+    AC0:	0: stop at boundary, 1: increment by one
+    AC1: 	0: first column then page, 1: first page, then column increment
+    AC2:	0: increment page adr, 1: decrement page adr.
+  */
+  U8X8_C(0x08b),            			/* set auto increment, low bits are AC2 AC1 AC0 */
+  
+  /*
+    LC0:	0
+    MX:	Mirror X
+    MY:	Mirror Y
+  */  
+  U8X8_C(0x0c0),            			/* low bits are MY, MX, LC0 */
+  
+  U8X8_C(0x0f8),            			// window mode off
+  U8X8_C(0x010),		                // col high
+  U8X8_C(0x000),		                // col low
+  U8X8_C(0x0b0),		                // page
+  
+  U8X8_C(0x0a6),            			/* set normal pixel mode (not inverse) */
+  U8X8_C(0x0a4),            			/* set normal pixel mode (not all on) */
+
+  /* test code 
+  U8X8_C(0x0af),		                // display on 
+  U8X8_C(0x0f8),            			// window mode off
+  U8X8_CA(0x0f4, 0),			// set window
+  U8X8_CA(0x0f5, 0),
+  U8X8_CA(0x0f6, 4),
+  U8X8_CA(0x0f7, 1),
+  U8X8_C(0x0f9),            			// window mode on
+  U8X8_D1(0x03),
+  U8X8_D1(0x0c0),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  */
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1610_dogxl160_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on, UC1610 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1610_dogxl160_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off,  UC1610 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1610_dogxl160_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  /*
+    LC0:	0
+    MX:	Mirror X
+    MY:	Mirror Y
+  */  
+  U8X8_C(0x0c0),            			/* low bits are MY, MX, LC0 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1610_dogxl160_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  /*
+    LC0:	0
+    MX:	Mirror X
+    MY:	Mirror Y
+  */  
+  U8X8_C(0x0c6),            			/* low bits are MY, MX, LC0 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+/* 
+  UC1610 has two chip select inputs (CS0 and CS1).
+  CS0 is low active, CS1 is high active. It will depend on the display
+  module whether the display has a is low or high active chip select.
+*/
+
+static const u8x8_display_info_t u8x8_uc1610_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 15,
+  /* pre_chip_disable_wait_ns = */ 15,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 30,	
+  /* sck_pulse_width_ns = */ 63,	/* half of cycle time (125ns cycle time according to datasheet) --> 8MHz clock */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,
+  /* write_pulse_width_ns = */ 40,
+  /* tile_width = */ 20,		
+  /* tile_hight = */ 13,		/* height of 13*8=104 pixel */
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 160,
+  /* pixel_height = */ 104
+};
+
+
+/*
+  RAM Organization:
+  D0  Pix0
+  D1
+  D2  Pix1
+  D3
+  D4  Pix2
+  D5
+  D6  Pix3
+  D7    
+  D0  Pix4
+  D1
+  D2  Pix5
+  D3
+  D4  Pix6
+  D5
+  D6  Pix7
+  D7    
+
+
+*/
+static uint8_t *u8x8_convert_tile_for_uc1610(uint8_t *t)
+{
+  uint8_t i;
+  uint16_t r;
+  static uint8_t buf[16];
+  uint8_t *pbuf = buf;
+
+  for( i = 0; i < 8; i++ )
+  {
+    r = u8x8_upscale_byte(*t++);
+    *pbuf++ = r & 255;
+    r >>= 8;
+    *pbuf++ = r;
+  }
+  return buf;
+}
+
+uint8_t u8x8_d_uc1610_ea_dogxl160(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c, page;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1610_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1610_dogxl160_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1610_dogxl160_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1610_dogxl160_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1610_dogxl160_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1610_dogxl160_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int  );	/* uc1610 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+    
+      page = (((u8x8_tile_t *)arg_ptr)->y_pos);
+      page *= 2;
+
+      u8x8_cad_SendCmd(u8x8, 0x0f8 );	/* window disable */
+      
+      //u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      //u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      //u8x8_cad_SendCmd(u8x8, 0x0b0 | page);
+
+      u8x8_cad_SendCmd(u8x8, 0x0f4 );	/* window start column */
+      u8x8_cad_SendArg(u8x8, x);
+      u8x8_cad_SendCmd(u8x8, 0x0f5 );	/* window start page */
+      u8x8_cad_SendArg(u8x8, page);
+      u8x8_cad_SendCmd(u8x8, 0x0f6 );	/* window end column */
+      u8x8_cad_SendArg(u8x8, 159);		/* end of display */
+      u8x8_cad_SendCmd(u8x8, 0x0f7 );	/* window end page */
+      u8x8_cad_SendArg(u8x8, page+1);
+      u8x8_cad_SendCmd(u8x8, 0x0f9 );	/* window enable */
+    
+      do
+      {
+	c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	
+	
+	do
+	{
+	  
+	  
+	  
+	  u8x8_cad_SendData(u8x8, 16, u8x8_convert_tile_for_uc1610(ptr));
+
+	  
+	  ptr += 8;
+	  x += 8;
+	  c--;
+	} while( c > 0 );
+	
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+
+    
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1611.c

@@ -0,0 +1,502 @@
+/*
+
+  u8x8_d_uc1611.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  6 Nov 2016: Not yet finished
+  
+  There are two controller:
+  UC1611s		160x256
+  UC1611			160x240
+  
+  Differences:
+  UC1611		0xa8 cmd: enables 80 display rows
+  UC1611s	0xa8 cmd: controlls graylevels
+  
+  UC1611		0xc0 cmd: single byte command for LCD mapping control
+  UC1611s	0xc0 cmd: double byte command for LCD mapping control
+  
+  
+*/
+#include "u8x8.h"
+
+
+
+
+
+static const uint8_t u8x8_d_uc1611s_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a9),		                /* display on, UC1611s */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1611s_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a8),		                /* display off, enter sleep mode, UC1611s */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1611s_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0c0, 0x004),            	/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1611s_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0c0, 0x002),            	/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_uc1611_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+   
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+    
+      y = ((u8x8_tile_t *)arg_ptr)->y_pos;
+      u8x8_cad_SendCmd(u8x8, 0x060 | (y&15));
+      u8x8_cad_SendCmd(u8x8, 0x070 | (y>>4));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    /*	handled in the calling procedure 
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1611_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_init_seq);
+      break;
+    */
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int  );	/* uc1611 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*================================================*/
+/* EA DOGM240 */
+
+
+/*
+  UC1611 has two chip select inputs (CS0 and CS1).
+  CS0 is low active, CS1 is high active. It will depend on the display
+  module whether the display has a is low or high active chip select.
+*/
+
+static const u8x8_display_info_t u8x8_uc1611_240x64_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* uc1611 datasheet, page 60, actually 0 */
+  /* pre_chip_disable_wait_ns = */ 10,	/* uc1611 datasheet, page 60, actually 0 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 10, 	/* uc1611 datasheet, page 67 */
+  /* sda_setup_time_ns = */ 10,		/* uc1611 datasheet, page 64, actually 0 */
+  /* sck_pulse_width_ns = */ 60,	/* half of cycle time  */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/* uc1611 datasheet, page 60 */
+  /* write_pulse_width_ns = */ 80,	/* uc1611 datasheet, page 60 */
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 64
+};
+
+static const uint8_t u8x8_d_uc1611_ea_dogm240_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x02f),            			/* internal pump control */
+  U8X8_CA(0x0f1, 63),			/* set COM end */
+  U8X8_CA(0x0f2, 0x000),		/* display line start */
+  U8X8_CA(0x0f3, 63),			/* display line end */
+  U8X8_C(0x0a3),            			/* line rate */
+  U8X8_CA(0x081, 0x0a4),		/* set contrast, EA default: 0x0b7 */
+  
+  //U8X8_C(0x0a9),            			/* display enable */
+
+  U8X8_C(0x0d1),            			/* display pattern */  
+  U8X8_C(0x089),            			/* auto increment */
+  U8X8_CA(0x0c0, 0x004),            	/* LCD Mapping */
+  U8X8_C(0x000),		                /* column low nibble */
+  U8X8_C(0x010),		                /* column high nibble */  
+  U8X8_C(0x060),		                /* page adr low */
+  U8X8_C(0x070),		                /* page adr high */
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+/* UC1611s 240x64 display */
+uint8_t u8x8_d_uc1611_ea_dogm240(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1611_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1611_240x64_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611_ea_dogm240_init_seq);
+	break;
+      case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+	if ( arg_int == 0 )
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_powersave0_seq);
+	else
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_powersave1_seq);
+	break;
+      case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+	if ( arg_int == 0 )
+	{
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_flip0_seq);
+	  u8x8->x_offset = u8x8->display_info->default_x_offset;
+	}
+	else
+	{
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_flip1_seq);
+	  u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+	}	
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+/*================================================*/
+/* EA DOGXL240 */
+
+static const uint8_t u8x8_d_uc1611_ea_dogxl240_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x02f),            			/* internal pump control */
+  U8X8_CA(0x0f1, 0x07f),			/* set COM end */
+  U8X8_CA(0x0f2, 0x000),		/* display line start */
+  U8X8_CA(0x0f3, 127),		/* display line end */
+  U8X8_C(0x0a3),            			/* line rate */
+  U8X8_CA(0x081, 0x08f),		/* set contrast */
+  
+  //U8X8_C(0x0a9),            			/* display enable */
+
+  U8X8_C(0x0d1),            			/* display pattern */  
+  U8X8_C(0x089),            			/* auto increment */
+  U8X8_CA(0x0c0, 0x004),            	/* LCD Mapping */
+  U8X8_C(0x000),		                /* column low nibble */
+  U8X8_C(0x010),		                /* column high nibble */  
+  U8X8_C(0x060),		                /* page adr low */
+  U8X8_C(0x070),		                /* page adr high */
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_uc1611_240x128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* uc1611 datasheet, page 60, actually 0 */
+  /* pre_chip_disable_wait_ns = */ 10,	/* uc1611 datasheet, page 60, actually 0 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 10, 	/* uc1611 datasheet, page 67 */
+  /* sda_setup_time_ns = */ 10,		/* uc1611 datasheet, page 64, actually 0 */
+  /* sck_pulse_width_ns = */ 60,	/* half of cycle time  */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/* uc1611 datasheet, page 60 */
+  /* write_pulse_width_ns = */ 80,	/* uc1611 datasheet, page 60 */
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 128
+};
+
+/* UC1611s 240x128 display */
+uint8_t u8x8_d_uc1611_ea_dogxl240(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1611_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1611_240x128_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611_ea_dogxl240_init_seq);
+	break;
+      case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+	if ( arg_int == 0 )
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_powersave0_seq);
+	else
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_powersave1_seq);
+	break;
+      case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+	if ( arg_int == 0 )
+	{
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_flip0_seq);
+	  u8x8->x_offset = u8x8->display_info->default_x_offset;
+	}
+	else
+	{
+	  u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611s_flip1_seq);
+	  u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+	}	
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+/*================================================*/
+/* EMERGING DISPLAY, EW50850FLWP 240x160 */
+/* active high CS (CS1), UC1611 display  */
+
+static const uint8_t u8x8_d_uc1611_ew50850_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x02f),            			/* internal pump control */
+  U8X8_CA(0x0f1, 159),			/* set COM end */
+  U8X8_CA(0x0f2, 0),			/* display line start */
+  U8X8_CA(0x0f3, 159),			/* display line end */
+  U8X8_C(0x0a3),            			/* line rate */
+  U8X8_CA(0x081, 75),			/* set contrast */
+  
+  //U8X8_C(0x0a9),            			/* display enable */
+
+  U8X8_C(0x0d2),            			/* gray level mode: 16 gray shades */  
+  U8X8_C(0x089),            			/* auto increment */
+  U8X8_C(0x0c0),            			/* LCD Mapping Bit 0: MSF, Bit 1: MX, Bit 2: MY */
+  U8X8_C(0x000),		                /* column low nibble */
+  U8X8_C(0x010),		                /* column high nibble */  
+  U8X8_C(0x060),		                /* page adr low */
+  U8X8_C(0x070),		                /* page adr high */
+    
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_uc1611_ew50850_display_info =
+{
+  /* chip_enable_level = */ 1,		/* active high */
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* uc1611 datasheet, page 60, actually 0 */
+  /* pre_chip_disable_wait_ns = */ 10,	/* uc1611 datasheet, page 60, actually 0 */
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 10, 	/* uc1611 datasheet, page 67 */
+  /* sda_setup_time_ns = */ 10,		/* uc1611 datasheet, page 64, actually 0 */
+  /* sck_pulse_width_ns = */ 60,	/* half of cycle time  */
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/* uc1611 datasheet, page 60 */
+  /* write_pulse_width_ns = */ 80,	/* uc1611 datasheet, page 60 */
+  /* tile_width = */ 30,		/* width of 30*8=240 pixel */
+  /* tile_hight = */ 20,		/* height: 160 pixel */
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 240,
+  /* pixel_height = */ 160
+};
+
+static const uint8_t u8x8_d_uc1611_alt_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c0),				/* LCD Mapping Bit 0: MSF, Bit 1: MX, Bit 2: MY */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1611_alt_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c6),				/* LCD Mapping Bit 0: MSF, Bit 1: MX, Bit 2: MY */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1611_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0af),		                /* display on, UC1611 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1611_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a8),		                /* display off, enter sleep mode, UC1611 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+/* EW50850, 240x160 */
+uint8_t u8x8_d_uc1611_ew50850(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c, i, v, m0, m1, ai;
+  uint8_t *ptr;
+  /* msg not handled, then try here */
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+   
+      y = ((u8x8_tile_t *)arg_ptr)->y_pos;
+      y*=4;
+      m0 = 1;
+      m1 = 2;
+      for( i = 0; i < 4; i++ )
+      {
+        u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+        u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+    
+	u8x8_cad_SendCmd(u8x8, 0x060 | (y&15));
+	u8x8_cad_SendCmd(u8x8, 0x070 | (y>>4));
+      
+	ai = arg_int;
+	do
+	{
+	  c = ((u8x8_tile_t *)arg_ptr)->cnt;
+	  c *= 8;
+	  ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+	  while( c > 0 )
+	  {
+	    v = 0;
+	    if ( *ptr & m0 )
+	      v|= 0x0f;
+	    if ( *ptr & m1 )
+	      v|= 0xf0;
+	    u8x8_cad_SendData(u8x8, 1, &v);	/* note: SendData can not handle more than 255 bytes */
+	    c--;
+            ptr++;
+	  }
+	  ai--;
+	} while( ai > 0 );
+	
+	m0 <<= 2;
+	m1 <<= 2;
+	y++;
+      }
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1611_ew50850_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611_ew50850_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611_alt_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1611_alt_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+  case U8X8_MSG_DISPLAY_SET_CONTRAST:
+    u8x8_cad_StartTransfer(u8x8);
+    u8x8_cad_SendCmd(u8x8, 0x081 );
+    u8x8_cad_SendArg(u8x8, arg_int  );	/* uc1611 has range from 0 to 255 */
+    u8x8_cad_EndTransfer(u8x8);
+    break;
+#endif
+    default:
+      return 0;		/* msg unknown */
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1617.c

@@ -0,0 +1,241 @@
+/*
+
+  u8x8_d_uc1617.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2017, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+*/
+#include "u8x8.h"
+
+
+
+
+
+static const uint8_t u8x8_d_uc1617_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ad),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1617_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ac),		                /* display off, enter sleep mode */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1617_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c4),            	/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1617_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c2),            	/* LCD Mapping */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_uc1617_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+   
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+    
+      y = ((u8x8_tile_t *)arg_ptr)->y_pos;
+      u8x8_cad_SendCmd(u8x8, 0x060 | (y&15));
+      u8x8_cad_SendCmd(u8x8, 0x070 | (y>>4));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1617_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1617_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1617_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1617_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int  );	/* uc1617 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+/*================================================*/
+/* JLX128128 */
+
+static const uint8_t u8x8_d_uc1617_jlx128128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* reset */
+  U8X8_DLY(10),
+  
+  //U8X8_D1(0x0ff),
+  U8X8_C(0x027),            			/* temperature compensation */
+  U8X8_C(0x02b),            			/* panel loading: 13-18nF */
+  
+  U8X8_C(0x02f),            			/* internal pump control */
+  U8X8_C(0x0eb),            			/* bias=1/11 */
+  U8X8_CA(0x081, 0x066),		/* set contrast */
+  //U8X8_C(0x0a9),            			/* used in display datasheet, but cmd not described in controller datasheet */
+  
+  U8X8_CA(0x0f1, 0x07f),			/* set COM end */
+  U8X8_CA(0x0f2, 0x000),		/* display line start */
+  U8X8_CA(0x0f3, 127),			/* display line end */
+  U8X8_C(0x0a3),            			/* line rate */
+  
+  U8X8_C(0x0d3),            			/* */
+  U8X8_C(0x0d7),            			/* */
+  
+  U8X8_C(0x0ad),            			/* display enable BW Mode*/
+  //U8X8_C(0x0af),            			/* display enable GS Mode*/
+
+  //U8X8_C(0x0a5),            			/* all pixel on */
+
+  //U8X8_C(0x0d1),            			/* display pattern */  
+  U8X8_C(0x089),            			/* auto increment */
+  U8X8_C(0x0c4),            	/* LCD Mapping */
+  U8X8_C(0x000),		                /* column  */
+  U8X8_C(0x060),		                /* page adr low */
+  U8X8_C(0x070),		                /* page adr high */
+
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  U8X8_D1(0x0ff),
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const u8x8_display_info_t u8x8_uc1617_128x128_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* uc1617 datasheet, page 54, actually 5 */
+  /* pre_chip_disable_wait_ns = */ 10,	/* uc1617 datasheet, page 54, actually 5 */
+  /* reset_pulse_width_ms = */ 10, 
+  /* post_reset_wait_ms = */ 20, 	/* uc1617 datasheet, page 56 */
+  /* sda_setup_time_ns = */ 24,		/* uc1617 datasheet, page 54 */
+  /* sck_pulse_width_ns = */ 45,	/* half of cycle time  uc1617 datasheet, page 54*/
+  /* sck_clock_hz = */ 8000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/* uc1617 datasheet, page 52 */
+  /* write_pulse_width_ns = */ 65,	/* uc1617 datasheet, page 52 */
+  /* tile_width = */ 16,		/* width of 16*8=128 pixel */
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 128
+};
+
+uint8_t u8x8_d_uc1617_jlx128128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1617_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1617_128x128_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1617_jlx128128_init_seq);
+	for(;;)
+	  ;
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1638.c

@@ -0,0 +1,223 @@
+/*
+
+  u8x8_d_uc1638.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+
+static const uint8_t u8x8_d_uc1638_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0c9, 0x0ad),		                /* display on */   /* UC1638 B/W mode */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1638_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_CA(0x0c9, 0x0ac),		                /* display off */   /* UC1638 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1638_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c4),            	/* LCD Mapping */    /* UC1638*/
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1638_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0c2),            	/* LCD Mapping */    /* UC1638*/
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+uint8_t u8x8_d_uc1638_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, y, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+
+      u8x8_cad_SendCmd(u8x8, 0x004);  /* UC1638 */
+      u8x8_cad_SendArg(u8x8, x);
+    
+      y = ((u8x8_tile_t *)arg_ptr)->y_pos;
+      y += u8x8->x_offset;
+      y *= 2;		/* for B/W mode, use only every second page */
+
+      u8x8_cad_SendCmd(u8x8, 0x060 | (y&15));  /* UC1638 */
+      u8x8_cad_SendCmd(u8x8, 0x070 | (y>>4));  /* UC1638 */
+    
+    
+      u8x8_cad_SendCmd(u8x8, 0x001); /* UC1638 */
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    /*	handled in the calling procedure 
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1638_128x64_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_init_seq);
+      break;
+    */
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1638_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1638_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1638_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1638_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int  );	/* uc1638 has range from 0 to 255 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+
+/*================================================*/
+/* uc1638 160x128 */
+
+/* values taken from uc1608 */
+static const u8x8_display_info_t u8x8_uc1638_160x128_display_info =
+{
+  /* chip_enable_level = */ 1,	/* uc1638 has high active CS */
+  /* chip_disable_level = */ 0,
+  
+  /* post_chip_enable_wait_ns = */ 10,	/* */
+  /* pre_chip_disable_wait_ns = */ 20,	/* */
+  /* reset_pulse_width_ms = */ 5, 	/* */
+  /* post_reset_wait_ms = */ 150, 	
+  /* sda_setup_time_ns = */ 30,		/* */
+  /* sck_pulse_width_ns = */ 65,	/* */
+  /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 3,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,	/*  */
+  /* write_pulse_width_ns = */ 35,	/*  */
+  /* tile_width = */ 20,		/* width of 20*8=160 pixel */
+  /* tile_hight = */ 16,
+  /* default_x_offset = */ 0,	/*  */
+  /* flipmode_x_offset = */ 0,	/* */
+  /* pixel_width = */ 160,
+  /* pixel_height = */ 128
+};
+
+static const uint8_t u8x8_d_uc1638_160x128_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+
+  U8X8_CA(0x0e1, 0x0e2),		/* software reset */    /* UC1638*/
+  U8X8_DLY(5),					/* 5 ms */	
+
+  U8X8_C(0x024),            		/*	 set temp comp*/
+  U8X8_C(0x0c0),            		/*	mirror y and mirror x */  /* WAS: c2 */
+  U8X8_C(0x0a2),            		/*	line rate */
+  U8X8_C(0x0d6),            		/*	gray scale 2 */
+  U8X8_C(0x0eb),            		/*	 set bias*/
+  U8X8_C(0x095),            		/*	 set 1 bit per pixel, pattern 0*/
+  U8X8_C(0x089),            		/*	 set auto increment, low bits are AC2 AC1 AC0 */  /* WAS 89 */
+
+
+  U8X8_CA(0x081, 0x0a0),		/* set contrast */    /* UC1638*/
+  
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+uint8_t u8x8_d_uc1638_160x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  /* call common procedure first and handle messages there */
+  if ( u8x8_d_uc1638_common(u8x8, msg, arg_int, arg_ptr) == 0 )
+  {
+    /* msg not handled, then try here */
+    switch(msg)
+    {
+      case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+	u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1638_160x128_display_info);
+	break;
+      case U8X8_MSG_DISPLAY_INIT:
+	u8x8_d_helper_display_init(u8x8);
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1638_160x128_init_seq);
+	break;
+      default:
+	return 0;		/* msg unknown */
+    }
+  }
+  return 1;
+}
+
+
+/*================================================*/

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1701_dogs102.c

@@ -0,0 +1,203 @@
+/*
+
+  u8x8_d_uc1701_dogs102.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_uc1701_dogs102_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  
+  U8X8_C(0x0a1),		                /* ADC set to reverse */
+  U8X8_C(0x0c0),		                /* common output mode */
+  // Flipmode
+  //U8X8_C(0x0a0),		                /* ADC set to reverse */
+  //U8X8_C(0x0c8),		                /* common output mode */
+  
+  U8X8_C(0x0a6),		                /* display normal, bit val 0: LCD pixel off. */
+  U8X8_C(0x0a2),		                /* LCD bias 1/9 */
+  U8X8_C(0x02f),		                /* all power  control circuits on */
+  U8X8_C(0x027),		                /* regulator, booster and follower */
+  U8X8_CA(0x081, 0x00e),		/* set contrast, contrast value, EA default: 0x010, previous value for S102: 0x0e */
+  U8X8_C(0x0fa),		                /* Set Temp compensation */ 
+  U8X8_C(0x090),		                /* 0.11 deg/c WP Off WC Off*/
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_dogs102_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a4),		                /* all pixel off, issue 142 */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_dogs102_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_dogs102_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_dogs102_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const u8x8_display_info_t u8x8_uc1701_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 5,
+  /* pre_chip_disable_wait_ns = */ 5,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 12,		
+  /* sck_pulse_width_ns = */ 75,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,
+  /* write_pulse_width_ns = */ 40,
+  /* tile_width = */ 13,		/* width of 13*8=104 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 30,
+  /* pixel_width = */ 102,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_uc1701_ea_dogs102(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1701_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int >> 2 );	/* uc1701 has range from 0 to 63 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      /* 
+	The following if condition checks the hardware limits of the uc1701 
+	controller: It is not allowed to write beyond the display limits.
+	This is in fact an issue within flip mode.
+      */
+      if ( c + x > 132u )
+      {
+	c = 132u;
+	c -= x;
+      }
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_d_uc1701_mini12864.c

@@ -0,0 +1,205 @@
+/*
+
+  u8x8_d_uc1701_mini12864.c (dealextreme, displays from ebay MP3 players)
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+#include "u8x8.h"
+
+
+
+
+static const uint8_t u8x8_d_uc1701_mini12864_init_seq[] = {
+    
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  
+  U8X8_C(0x0e2),            			/* soft reset */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x040),		                /* set display start line to 0 */
+  
+  U8X8_C(0x0a0),		                /* ADC set to reverse */
+  U8X8_C(0x0c8),		                /* common output mode */
+  
+  U8X8_C(0x0a6),		                /* display normal, bit val 0: LCD pixel off. */
+  U8X8_C(0x0a2),		                /* LCD bias 1/9 */
+  U8X8_C(0x02f),		                /* all power  control circuits on */
+  U8X8_C(0x0f8),		/* set booster ratio to */
+  U8X8_C(0x000),		/* 4x */
+  U8X8_C(0x023),		/* set V0 voltage resistor ratio to large */
+  U8X8_C(0x081),		/* set contrast */
+  U8X8_C(0x027),		/* contrast value */
+  U8X8_C(0x0ac),		/* indicator */
+  //  0x000,		/* disable */
+  
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+  
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_mini12864_powersave0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a4),		                /* all pixel off, issue 142 */
+  U8X8_C(0x0af),		                /* display on */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_mini12864_powersave1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0ae),		                /* display off */
+  U8X8_C(0x0a5),		                /* enter powersafe: all pixel on, issue 142 */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_mini12864_flip0_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a0),				/* segment remap a0/a1*/
+  U8X8_C(0x0c8),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+static const uint8_t u8x8_d_uc1701_mini12864_flip1_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x0a1),				/* segment remap a0/a1*/
+  U8X8_C(0x0c0),				/* c0: scan dir normal, c8: reverse */
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
+static const u8x8_display_info_t u8x8_uc1701_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 5,
+  /* pre_chip_disable_wait_ns = */ 5,
+  /* reset_pulse_width_ms = */ 1, 
+  /* post_reset_wait_ms = */ 6, 
+  /* sda_setup_time_ns = */ 12,		
+  /* sck_pulse_width_ns = */ 75,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 30,
+  /* write_pulse_width_ns = */ 40,
+  /* tile_width = */ 16,		/* width of 16*8=128 pixel */
+  /* tile_hight = */ 8,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 4,
+  /* pixel_width = */ 128,
+  /* pixel_height = */ 64
+};
+
+uint8_t u8x8_d_uc1701_mini12864(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t x, c;
+  uint8_t *ptr;
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_uc1701_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_mini12864_init_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
+      if ( arg_int == 0 )
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_mini12864_powersave0_seq);
+      else
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_mini12864_powersave1_seq);
+      break;
+    case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
+      if ( arg_int == 0 )
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_mini12864_flip0_seq);
+	u8x8->x_offset = u8x8->display_info->default_x_offset;
+      }
+      else
+      {
+	u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_mini12864_flip1_seq);
+	u8x8->x_offset = u8x8->display_info->flipmode_x_offset;
+      }	
+      break;
+#ifdef U8X8_WITH_SET_CONTRAST
+    case U8X8_MSG_DISPLAY_SET_CONTRAST:
+      u8x8_cad_StartTransfer(u8x8);
+      u8x8_cad_SendCmd(u8x8, 0x081 );
+      u8x8_cad_SendArg(u8x8, arg_int >> 2 );	/* uc1701 has range from 0 to 63 */
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+#endif
+    case U8X8_MSG_DISPLAY_DRAW_TILE:
+      u8x8_cad_StartTransfer(u8x8);
+    
+      x = ((u8x8_tile_t *)arg_ptr)->x_pos;
+      x *= 8;
+      x += u8x8->x_offset;
+      u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
+      u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
+      u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
+    
+      c = ((u8x8_tile_t *)arg_ptr)->cnt;
+      c *= 8;
+      ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
+      /* 
+	The following if condition checks the hardware limits of the uc1701 
+	controller: It is not allowed to write beyond the display limits.
+	This is in fact an issue within flip mode.
+    
+	bug: this check should be inside the while loop, see u8x8_d_pcd8544_84x48.c 
+      */
+      if ( c + x > 132u )
+      {
+	c = 132u;
+	c -= x;
+      }
+      do
+      {
+	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes */
+	arg_int--;
+      } while( arg_int > 0 );
+      
+      u8x8_cad_EndTransfer(u8x8);
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_debounce.c

@@ -0,0 +1,205 @@
+/*
+
+  u8x8_debounce.c
+  
+  Key/button simple debounce algorithm (Addon for u8x8)
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include "u8x8.h"
+
+static uint8_t u8x8_read_pin_state(u8x8_t *u8x8)
+{
+  uint8_t i;
+  uint8_t pin_state;
+  
+  pin_state = 255;	/* be compatible with the setup of the default pin setup, which is 255 */
+  for( i = 0; i < U8X8_PIN_INPUT_CNT; i++ )
+  {
+    pin_state <<= 1;
+    
+    /* the callback function should put the return value into this variable */
+    u8x8->gpio_result = 1;
+    u8x8_gpio_call(u8x8, U8X8_MSG_GPIO(i+U8X8_PIN_OUTPUT_CNT), 0);
+    pin_state |= u8x8->gpio_result & 1;
+  }
+  
+  return pin_state;
+}
+
+/*
+  return 0 to U8X8_PIN_INPUT_CNT-1 if there is a difference
+  return U8X8_PIN_INPUT_CNT if there is no difference
+*/
+static uint8_t u8x8_find_first_diff(uint8_t a, uint8_t b)
+{
+  uint8_t mask;
+  uint8_t i;
+  mask = 1;
+  i = U8X8_PIN_INPUT_CNT;
+  do
+  {
+    i--;
+    if ( (a & mask) != (b & mask) )
+      return i;
+    mask <<= 1;
+  } while( i > 0 );
+  return U8X8_PIN_INPUT_CNT;
+}
+
+/*
+  State A:
+    u8x8->debounce_last_pin_state == current_state 
+      --> State A
+    u8x8->debounce_last_pin_state != current_state 
+      --> u8x8->debounce_last_pin_state = current_state 
+      --> State B + cnt
+
+  State B + cnt
+    --> state--
+
+  State B
+    u8x8->debounce_last_pin_state == current_state 
+      --> keypress detected
+      --> State C
+    u8x8->debounce_last_pin_state != current_state 
+      --> State A
+
+  State C
+    u8x8->debounce_last_pin_state == current_state 
+      --> State C
+    u8x8->debounce_last_pin_state != current_state 
+      --> State A
+
+*/
+
+#ifdef __unix__xxxxxx_THIS_IS_DISABLED
+
+#include <stdio.h>
+#include <stdlib.h>
+uint8_t u8x8_GetMenuEvent(u8x8_t *u8x8)
+{
+    int c;
+    c = getc(stdin);
+    switch(c)
+    {
+        case 'n':
+            return  U8X8_MSG_GPIO_MENU_NEXT;
+        case 'p':
+            return  U8X8_MSG_GPIO_MENU_PREV;
+        case 's':
+            return  U8X8_MSG_GPIO_MENU_SELECT;
+        case 'h':
+            return  U8X8_MSG_GPIO_MENU_HOME;
+        case 'x':
+            exit(0);
+        default:
+            puts("press n, p, s, h or x");
+            break;
+    }
+    return 0;
+}
+
+
+#else  /* __unix__ */
+
+
+#define U8X8_DEBOUNCE_WAIT 2
+/* do debounce and return a GPIO msg which indicates the event */
+/* returns 0, if there is no event */
+#if defined(__GNUC__) && !defined(__CYGWIN__)
+# pragma weak  u8x8_GetMenuEvent
+#endif
+uint8_t u8x8_GetMenuEvent(u8x8_t *u8x8)
+{
+  uint8_t pin_state;
+  uint8_t result_msg = 0;	/* invalid message, no event */
+  
+  pin_state = u8x8_read_pin_state(u8x8);
+  
+  /* States A, B, C & D are encoded in the upper 4 bit*/
+  switch(u8x8->debounce_state)
+  {
+    case 0x00:	/* State A, default state */
+      if ( u8x8->debounce_default_pin_state != pin_state )
+      {
+	//u8x8->debounce_last_pin_state = pin_state;
+	u8x8->debounce_state = 0x010 + U8X8_DEBOUNCE_WAIT;
+      }
+      break;
+    case 0x10:	/* State B */
+      //if ( u8x8->debounce_last_pin_state != pin_state )
+      if ( u8x8->debounce_default_pin_state == pin_state )
+      {
+	u8x8->debounce_state = 0x00;	/* back to state A */
+      }
+      else
+      {
+	/* keypress detected */
+	u8x8->debounce_last_pin_state = pin_state;
+	//result_msg = U8X8_MSG_GPIO_MENU_NEXT;
+	u8x8->debounce_state = 0x020 + U8X8_DEBOUNCE_WAIT;	/* got to state C */	
+      }
+      break;
+      
+    case 0x20:	/* State C */
+      if ( u8x8->debounce_last_pin_state != pin_state )
+      {
+	u8x8->debounce_state = 0x00;	/* back to state A */
+      }
+      else
+      {
+	u8x8->debounce_state = 0x030;	/* got to state D */	
+      }
+      break;
+      
+    case 0x30:	/* State D */
+      /* wait until key release */
+      if ( u8x8->debounce_default_pin_state == pin_state )
+      {
+	u8x8->debounce_state = 0x00;	/* back to state A */
+	result_msg = U8X8_MSG_GPIO(u8x8_find_first_diff(u8x8->debounce_default_pin_state, u8x8->debounce_last_pin_state)+U8X8_PIN_OUTPUT_CNT);
+      }
+      else
+      {
+	//result_msg = U8X8_MSG_GPIO_MENU_NEXT;
+	// maybe implement autorepeat here 
+      }
+      break;
+    default:
+      u8x8->debounce_state--;	/* count down, until there is a valid state */
+      break;
+  }
+  return result_msg;
+}
+
+#endif /* __unix__ */

lib/U8g2_ID942-tweaked/src/clib/u8x8_display.c

@@ -0,0 +1,165 @@
+/*
+  
+  u8x8_display.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+  
+  Abstraction layer for the graphics controller.
+  Main goal is the placement of a 8x8 pixel block (tile) on the display.
+  
+*/
+
+
+#include "u8x8.h"
+
+
+/*==========================================*/
+/* internal library function */
+
+/*
+  this is a helper function for the U8X8_MSG_DISPLAY_SETUP_MEMORY function.
+  It can be called within the display callback function to carry out the usual standard tasks.
+  
+*/
+void u8x8_d_helper_display_setup_memory(u8x8_t *u8x8, const u8x8_display_info_t *display_info)
+{
+      /* 1) set display info struct */
+      u8x8->display_info = display_info;
+      u8x8->x_offset = u8x8->display_info->default_x_offset;
+}
+
+/*
+  this is a helper function for the U8X8_MSG_DISPLAY_INIT function.
+  It can be called within the display callback function to carry out the usual standard tasks.
+  
+*/
+void u8x8_d_helper_display_init(u8x8_t *u8x8)
+{
+      /* 2) apply port directions to the GPIO lines and apply default values for the IO lines*/
+      u8x8_gpio_Init(u8x8);
+      u8x8_cad_Init(u8x8);
+
+      /* 3) do reset */
+      u8x8_gpio_SetReset(u8x8, 1);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->reset_pulse_width_ms);
+      u8x8_gpio_SetReset(u8x8, 0);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->reset_pulse_width_ms);
+      u8x8_gpio_SetReset(u8x8, 1);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->post_reset_wait_ms);
+}    
+
+/*==========================================*/
+/* official functions */
+
+uint8_t u8x8_DrawTile(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t cnt, uint8_t *tile_ptr)
+{
+  u8x8_tile_t tile;
+  tile.x_pos = x;
+  tile.y_pos = y;
+  tile.cnt = cnt;
+  tile.tile_ptr = tile_ptr;
+  return u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, 1, (void *)&tile);
+}
+
+/* should be implemented as macro */
+void u8x8_SetupMemory(u8x8_t *u8x8)
+{
+  u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SETUP_MEMORY, 0, NULL);  
+}
+
+void u8x8_InitDisplay(u8x8_t *u8x8)
+{
+  u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_INIT, 0, NULL);  
+}
+
+void u8x8_SetPowerSave(u8x8_t *u8x8, uint8_t is_enable)
+{
+  u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_POWER_SAVE, is_enable, NULL);  
+}
+
+void u8x8_SetFlipMode(u8x8_t *u8x8, uint8_t mode)
+{
+  u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_FLIP_MODE, mode, NULL);  
+}
+
+void u8x8_SetContrast(u8x8_t *u8x8, uint8_t value)
+{
+  u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_CONTRAST, value, NULL);  
+}
+
+void u8x8_RefreshDisplay(u8x8_t *u8x8)
+{
+  u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_REFRESH, 0, NULL);  
+}
+
+void u8x8_ClearDisplayWithTile(u8x8_t *u8x8, const uint8_t *buf)
+{
+  u8x8_tile_t tile;
+  uint8_t h;
+
+  tile.x_pos = 0;
+  tile.cnt = 1;
+  tile.tile_ptr = (uint8_t *)buf;		/* tile_ptr should be const, but isn't */
+  
+  h = u8x8->display_info->tile_height;
+  tile.y_pos = 0;
+  do
+  {
+    u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, u8x8->display_info->tile_width, (void *)&tile);
+    tile.y_pos++;
+  } while( tile.y_pos < h );
+}
+
+void u8x8_ClearDisplay(u8x8_t *u8x8)
+{
+  uint8_t buf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+  u8x8_ClearDisplayWithTile(u8x8, buf);
+}
+
+void u8x8_FillDisplay(u8x8_t *u8x8)
+{
+  uint8_t buf[8] = { 255, 255, 255, 255, 255, 255, 255, 255 };
+  u8x8_ClearDisplayWithTile(u8x8, buf);
+}
+
+void u8x8_ClearLine(u8x8_t *u8x8, uint8_t line)
+{
+  uint8_t buf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+  u8x8_tile_t tile;
+  if ( line < u8x8->display_info->tile_height )
+  {
+    tile.x_pos = 0;
+    tile.y_pos = line;
+    tile.cnt = 1;
+    tile.tile_ptr = (uint8_t *)buf;		/* tile_ptr should be const, but isn't */
+    u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, u8x8->display_info->tile_width, (void *)&tile);
+  }  
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_gpio.c

@@ -0,0 +1,50 @@
+/*
+
+  u8x8_gpio.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+
+#include "u8x8.h"
+
+
+void u8x8_gpio_call(u8x8_t *u8x8, uint8_t msg, uint8_t arg)
+{
+  u8x8->gpio_and_delay_cb(u8x8, msg, arg, NULL);
+}
+
+/*
+void u8x8_gpio_Delay(u8x8_t *u8x8, uint8_t msg, uint8_t dly)
+{
+  u8x8->gpio_and_delay_cb(u8x8, msg, dly, NULL);
+}
+*/

lib/U8g2_ID942-tweaked/src/clib/u8x8_input_value.c

@@ -0,0 +1,123 @@
+/*
+
+  u8x8_input_value.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include "u8x8.h"
+
+/*
+  return:
+    0: value is not changed (HOME/Break Button pressed)
+    1: value has been updated
+*/
+
+uint8_t u8x8_UserInterfaceInputValue(u8x8_t *u8x8, const char *title, const char *pre, uint8_t *value, uint8_t lo, uint8_t hi, uint8_t digits, const char *post)
+{
+  uint8_t height;
+  uint8_t y;
+  uint8_t width;
+  uint8_t x;
+  uint8_t local_value = *value;
+  uint8_t r;
+  uint8_t event;
+
+  /* calculate overall height of the input value box */
+  height = 1;	/* button line */
+  height += u8x8_GetStringLineCnt(title);
+  
+  /* calculate offset from top */
+  y = 0;
+  if ( height < u8x8_GetRows(u8x8)  )
+  {
+    y = u8x8_GetRows(u8x8);
+    y -= height;
+    y /= 2;
+  }
+  
+  /* calculate offset from left for the label */
+  x = 0;
+  width = u8x8_GetUTF8Len(u8x8, pre);
+  width += digits;
+  width += u8x8_GetUTF8Len(u8x8, post);
+  if ( width < u8x8_GetCols(u8x8) )
+  {
+    x = u8x8_GetCols(u8x8);
+    x -= width;
+    x /= 2;
+  }
+  
+  /* render */
+  u8x8_ClearDisplay(u8x8);   /* required, because not everything is filled */
+  u8x8_SetInverseFont(u8x8, 0);  
+  y += u8x8_DrawUTF8Lines(u8x8, 0, y, u8x8_GetCols(u8x8), title);
+  x += u8x8_DrawUTF8(u8x8, x, y, pre);
+  u8x8_DrawUTF8(u8x8, x+digits, y, post);
+  u8x8_SetInverseFont(u8x8, 1);
+  
+  /* event loop */
+  u8x8_DrawUTF8(u8x8, x, y, u8x8_u8toa(local_value, digits));
+  for(;;)
+  {
+    event = u8x8_GetMenuEvent(u8x8);
+    if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+    {
+      *value = local_value;
+      r = 1;
+      break;
+    }
+    else if ( event == U8X8_MSG_GPIO_MENU_HOME )
+    {
+      r = 0;
+      break;
+    }
+    else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_UP )
+    {
+      if ( local_value >= hi )
+	local_value = lo;
+      else
+	local_value++;
+      u8x8_DrawUTF8(u8x8, x, y, u8x8_u8toa(local_value, digits));
+    }
+    else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_DOWN )
+    {
+      if ( local_value <= lo )
+	local_value = hi;
+      else
+	local_value--;
+      u8x8_DrawUTF8(u8x8, x, y, u8x8_u8toa(local_value, digits));
+    }        
+  }
+  
+  u8x8_SetInverseFont(u8x8, 0);
+  return r;  
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_message.c

@@ -0,0 +1,152 @@
+/*
+
+  u8x8_message.c
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include "u8x8.h"
+
+uint8_t u8x8_draw_button_line(u8x8_t *u8x8, uint8_t y, uint8_t w, uint8_t cursor, const char *s)
+{
+  uint8_t i;
+  uint8_t cnt;
+  uint8_t total;
+  uint8_t d;
+  uint8_t x;
+  cnt = u8x8_GetStringLineCnt(s);
+  
+  /* calculate the width of the button */
+  total = 0;
+  for( i = 0; i < cnt; i++ )
+  {
+    total += u8x8_GetUTF8Len(u8x8, u8x8_GetStringLineStart(i, s));
+  }
+  total += (cnt-1);	/* had one space between the buttons */
+  
+  /* calculate the left offset */
+  d = 0;
+  if ( total < w )
+  {
+    d = w;
+    d -= total;
+    d /= 2;
+  }
+  
+  /* draw the buttons */
+  x = d;
+  u8x8_SetInverseFont(u8x8, 0);
+  for( i = 0; i < cnt; i++ )
+  {
+    if ( i == cursor )
+      u8x8_SetInverseFont(u8x8, 1);
+      
+    x+=u8x8_DrawUTF8(u8x8, x, y, u8x8_GetStringLineStart(i, s));
+    u8x8_SetInverseFont(u8x8, 0);
+    x+=u8x8_DrawUTF8(u8x8, x, y, " ");
+  }
+  
+  /* return the number of buttons */
+  return cnt;
+}
+
+/*
+  title1:	Multiple lines,separated by '\n'
+  title2:	A single line/string which is terminated by '\0' or '\n' . "title2" accepts the return value from u8x8_GetStringLineStart()
+  title3:	Multiple lines,separated by '\n'
+  buttons:	one more more buttons separated by '\n' and terminated with '\0'
+*/
+
+uint8_t u8x8_UserInterfaceMessage(u8x8_t *u8x8, const char *title1, const char *title2, const char *title3, const char *buttons)
+{
+  uint8_t height;
+  uint8_t y;
+  uint8_t cursor = 0;
+  uint8_t button_cnt;
+  uint8_t event;
+
+  u8x8_SetInverseFont(u8x8, 0);
+  
+  /* calculate overall height of the message box */
+  height = 1;	/* button line */
+  height += u8x8_GetStringLineCnt(title1);
+  if ( title2 != NULL )
+    height ++;
+  height += u8x8_GetStringLineCnt(title3);
+  
+  /* calculate offset from top */
+  y = 0;
+  if ( height < u8x8_GetRows(u8x8)  )
+  {
+    y = u8x8_GetRows(u8x8);
+    y -= height;
+    y /= 2;
+  }
+
+  /* draw message box */
+  
+  u8x8_ClearDisplay(u8x8);   /* required, because not everything is filled */
+  
+  y += u8x8_DrawUTF8Lines(u8x8, 0, y, u8x8_GetCols(u8x8), title1);
+  if ( title2 != NULL )
+  {
+    u8x8_DrawUTF8Line(u8x8, 0, y, u8x8_GetCols(u8x8), title2);
+    y++;
+  }
+  y += u8x8_DrawUTF8Lines(u8x8, 0, y, u8x8_GetCols(u8x8), title3);
+
+  button_cnt = u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
+  
+  for(;;)
+  {
+    event = u8x8_GetMenuEvent(u8x8);
+    if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+      return cursor+1;
+    else if ( event == U8X8_MSG_GPIO_MENU_HOME )
+      break;
+    else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_UP )
+    {
+      cursor++;
+      if ( cursor >= button_cnt )
+	cursor = 0;
+      u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
+    }
+    else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_DOWN  )
+    {
+      if ( cursor == 0 )
+	cursor = button_cnt;
+      cursor--;
+      u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
+    }    
+  }  
+  return 0;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_selection_list.c

@@ -0,0 +1,173 @@
+/*
+
+  u8x8_selection_list.c
+  
+  selection list with scroll option
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include "u8x8.h"
+
+/*
+  increase the cursor position
+*/
+void u8sl_Next(u8sl_t *u8sl)
+{
+  u8sl->current_pos++;
+  if ( u8sl->current_pos >= u8sl->total )
+  {
+    u8sl->current_pos = 0;
+    u8sl->first_pos = 0;
+  }
+  else
+  {
+    if ( u8sl->first_pos + u8sl->visible <= u8sl->current_pos + 1 )
+    {
+      u8sl->first_pos = u8sl->current_pos - u8sl->visible + 1;
+    }
+  }
+}
+
+void u8sl_Prev(u8sl_t *u8sl)
+{
+  if ( u8sl->current_pos == 0 )
+  {
+    u8sl->current_pos = u8sl->total - 1;
+    u8sl->first_pos = 0;
+    if ( u8sl->total > u8sl->visible )
+      u8sl->first_pos = u8sl->total - u8sl->visible;
+  }
+  else
+  {
+    u8sl->current_pos--;
+    if ( u8sl->first_pos > u8sl->current_pos )
+      u8sl->first_pos = u8sl->current_pos;
+  }
+}
+
+void u8x8_DrawSelectionList(u8x8_t *u8x8, u8sl_t *u8sl, u8x8_sl_cb sl_cb, const void *aux)
+{
+  uint8_t i;
+  for( i = 0; i < u8sl->visible; i++ )
+  {
+    sl_cb(u8x8, u8sl, i+u8sl->first_pos, aux);
+  }
+}
+
+/* selection list with string line */
+void u8x8_sl_string_line_cb(u8x8_t *u8x8, u8sl_t *u8sl, uint8_t idx, const void *aux)
+{
+  const char *s;
+  uint8_t row;
+  /* calculate offset from display upper border */
+  row = u8sl->y;
+  
+  /* calculate target pos */
+  row += idx;
+  row -= u8sl->first_pos;
+  
+  /* check whether this is the current cursor line */
+  if ( idx == u8sl->current_pos )
+    u8x8_SetInverseFont(u8x8, 1);
+  else
+    u8x8_SetInverseFont(u8x8, 0);
+  
+  /* get the line from the array */
+  s = u8x8_GetStringLineStart(idx, (const char *)aux);
+  
+  /* draw the line */
+  if ( s == NULL )
+    s = "";
+  u8x8_DrawUTF8Line(u8x8, u8sl->x, row, u8x8_GetCols(u8x8), s);  
+  u8x8_SetInverseFont(u8x8, 0);
+}
+
+/*
+  title: 		NULL for no title, valid str for title line. Can contain mutliple lines, separated by '\n'
+  start_pos: 	default position for the cursor (starts with 1)
+  sl:			string list (list of strings separated by \n)
+  returns 0 if user has pressed the home key
+  returns the selected line+1 if user has pressed the select key (e.g. 1 for the first line)
+*/
+uint8_t u8x8_UserInterfaceSelectionList(u8x8_t *u8x8, const char *title, uint8_t start_pos, const char *sl)
+{
+  u8sl_t u8sl;
+  uint8_t event;
+  uint8_t title_lines;
+  
+  if ( start_pos > 0 )
+    start_pos--;
+  
+  u8sl.visible = u8x8_GetRows(u8x8);
+  u8sl.total = u8x8_GetStringLineCnt(sl);
+  u8sl.first_pos = 0;
+  u8sl.current_pos = start_pos;
+  u8sl.x = 0;
+  u8sl.y = 0;
+  
+
+  //u8x8_ClearDisplay(u8x8);   /* not required because all is 100% filled */
+  u8x8_SetInverseFont(u8x8, 0);
+  
+  if ( title != NULL )
+  {
+    title_lines = u8x8_DrawUTF8Lines(u8x8, u8sl.x, u8sl.y, u8x8_GetCols(u8x8), title);
+    u8sl.y+=title_lines;
+    u8sl.visible-=title_lines;
+  }
+  
+  if ( u8sl.current_pos >= u8sl.total )
+    u8sl.current_pos = u8sl.total-1;
+
+  
+  u8x8_DrawSelectionList(u8x8, &u8sl, u8x8_sl_string_line_cb, sl);
+
+  for(;;)
+  {
+    event = u8x8_GetMenuEvent(u8x8);
+    if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+      return u8sl.current_pos+1;
+    else if ( event == U8X8_MSG_GPIO_MENU_HOME )
+      return 0;
+    else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_DOWN )
+    {
+      u8sl_Next(&u8sl);
+      u8x8_DrawSelectionList(u8x8, &u8sl, u8x8_sl_string_line_cb, sl);      
+    }
+    else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_UP  )
+    {
+      u8sl_Prev(&u8sl);
+      u8x8_DrawSelectionList(u8x8, &u8sl, u8x8_sl_string_line_cb, sl);      
+    }
+  }
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_setup.c

@@ -0,0 +1,146 @@
+/*
+
+  u8x8_setup.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+
+#include "u8x8.h"
+
+/* universal dummy callback, which will be default for all callbacks */
+uint8_t u8x8_dummy_cb(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
+{
+  /* the dummy callback will not handle any message and will fail for all messages */
+  return 0;
+}
+
+
+static const u8x8_display_info_t u8x8_null_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 0,
+  /* pre_chip_disable_wait_ns = */ 0,
+  /* reset_pulse_width_ms = */ 0, 
+  /* post_reset_wait_ms = */ 0, 
+  /* sda_setup_time_ns = */ 0,		
+  /* sck_pulse_width_ns = */ 0,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 0,
+  /* write_pulse_width_ns = */ 0,
+  /* tile_width = */ 1,		/* 8x8 */
+  /* tile_hight = */ 1,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 8,
+  /* pixel_height = */ 8
+};
+
+
+/* a special null device */
+uint8_t u8x8_d_null_cb(u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_null_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      break;
+  }
+  /* the null device callback will succeed for all messages */
+  return 1;
+}
+
+
+/*
+  Description:
+    Setup u8x8
+  Args:
+    u8x8	An empty u8x8 structure
+*/
+void u8x8_SetupDefaults(u8x8_t *u8x8)
+{
+    u8x8->display_info = NULL;
+    u8x8->display_cb = u8x8_dummy_cb;
+    u8x8->cad_cb = u8x8_dummy_cb;
+    u8x8->byte_cb = u8x8_dummy_cb;
+    u8x8->gpio_and_delay_cb = u8x8_dummy_cb;
+    u8x8->is_font_inverse_mode = 0;
+    u8x8->device_address = 0;
+    u8x8->utf8_state = 0;		/* also reset by u8x8_utf8_init */
+    u8x8->i2c_address = 255;
+    u8x8->debounce_default_pin_state = 255;	/* assume all low active buttons */
+  
+#ifdef U8X8_USE_PINS 
+  {
+    uint8_t i;
+    for( i = 0; i < U8X8_PIN_CNT; i++ )
+      u8x8->pins[i] = U8X8_PIN_NONE;
+  }
+#endif
+}
+
+
+/*
+  Description:
+    Setup u8x8 and assign the callback function. The dummy 
+    callback "u8x8_dummy_cb" can be used, if no callback is required.
+    This setup will not communicate with the display itself.
+    Use u8x8_InitDisplay() to send the startup code to the Display.
+  Args:
+    u8x8				An empty u8x8 structure
+    display_cb			Display/controller specific callback function
+    cad_cb				Display controller specific communication callback function
+    byte_cb			Display controller/communication specific callback funtion
+    gpio_and_delay_cb	Environment specific callback function
+
+*/
+void u8x8_Setup(u8x8_t *u8x8, u8x8_msg_cb display_cb, u8x8_msg_cb cad_cb, u8x8_msg_cb byte_cb, u8x8_msg_cb gpio_and_delay_cb)
+{
+  /* setup defaults and reset pins to U8X8_PIN_NONE */
+  u8x8_SetupDefaults(u8x8);
+
+  /* setup specific callbacks */
+  u8x8->display_cb = display_cb;
+  u8x8->cad_cb = cad_cb;
+  u8x8->byte_cb = byte_cb;
+  u8x8->gpio_and_delay_cb = gpio_and_delay_cb;
+
+  /* setup display info */
+  u8x8_SetupMemory(u8x8);
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_string.c

@@ -0,0 +1,170 @@
+/*
+
+  u8x8_string.c
+  
+  string line procedures
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.    
+
+*/
+
+#include "u8x8.h"
+
+uint8_t u8x8_GetStringLineCnt(const char *str)
+{
+  char e;
+  uint8_t line_cnt = 1;
+  if ( str == NULL )
+    return 0;
+  for(;;)
+  {
+    e = *str;
+    if ( e == '\0' )
+      break;
+    str++;
+    if ( e == '\n' )
+      line_cnt++;
+  }
+  return line_cnt;
+}
+
+
+/*
+    Assumes strings, separated by '\n' in "str".
+    Returns the string at index "line_idx". First strng has line_idx = 0
+    Example:
+      Returns "xyz" for line_idx = 1 with str = "abc\nxyz"
+    Support both UTF8 and normal strings.
+*/
+const char *u8x8_GetStringLineStart(uint8_t line_idx, const char *str )
+{
+  char e;
+  uint8_t line_cnt = 1;
+  
+  if ( line_idx == 0 )
+    return str;
+
+  for(;;)
+  {
+    e = *str;
+    if ( e == '\0' )
+      break;
+    str++;
+    if ( e == '\n' )
+    {
+      if ( line_cnt == line_idx )
+	return str;
+      line_cnt++;
+    }
+  }
+  return NULL;	/* line not found */
+}
+
+/* copy until first '\n' or '\0' in str */
+/* Important: There is no string overflow check, ensure */
+/* that the destination buffer is large enough */
+void u8x8_CopyStringLine(char *dest, uint8_t line_idx, const char *str)
+{
+  if ( dest == NULL )
+    return;
+  str = u8x8_GetStringLineStart( line_idx, str );
+  if ( str != NULL )
+  {
+    for(;;)
+    {
+      if ( *str == '\n' || *str == '\0' )
+	break;
+      *dest = *str;
+      dest++;
+      str++;
+    }
+  }
+  *dest = '\0';
+}
+
+/*
+  Draw a string
+  Extend the string to size "w"
+  Center the string within "w"
+  return the size of the string
+
+*/
+uint8_t u8x8_DrawUTF8Line(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t w, const char *s)
+{
+  uint8_t d, lw;
+  uint8_t cx, dx;
+    
+  d = 0;
+  
+  lw = u8x8_GetUTF8Len(u8x8, s);
+  if ( lw < w )
+  {
+    d = w;
+    d -=lw;
+    d /= 2;
+  }
+    
+  cx = x;
+  dx = cx + d;
+  while( cx < dx )
+  {
+    u8x8_DrawUTF8(u8x8, cx, y, " ");
+    cx++;
+  }
+  cx += u8x8_DrawUTF8(u8x8, cx, y, s);
+  dx = x + w;
+  while( cx < dx )
+  {
+    u8x8_DrawUTF8(u8x8, cx, y, " ");
+    cx++;
+  }
+  cx -= x;
+  return cx;
+}
+
+/*
+  draw several lines at position x,y.
+  lines are stored in s and must be separated with '\n'.
+  lines can be centered with respect to "w" 
+  if s == NULL nothing is drawn and 0 is returned
+  returns the number of lines in s
+*/
+uint8_t u8x8_DrawUTF8Lines(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t w, const char *s)
+{
+  uint8_t i;
+  uint8_t cnt;
+  cnt = u8x8_GetStringLineCnt(s);
+  for( i = 0; i < cnt; i++ )
+  {
+    u8x8_DrawUTF8Line(u8x8, x, y, w, u8x8_GetStringLineStart(i, s));
+    y++;
+  }
+  return cnt;
+}

lib/U8g2_ID942-tweaked/src/clib/u8x8_u16toa.c

@@ -0,0 +1,68 @@
+/*
+
+  u8x8_u16toa.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+  
+*/
+
+
+#include "u8x8.h"
+
+const char *u8x8_u16toap(char * dest, uint16_t v)
+{
+  uint8_t pos;
+  uint8_t d;
+  uint16_t c;
+  c = 10000;
+  for( pos = 0; pos < 5; pos++ )
+  {
+      d = '0';
+      while( v >= c )
+      {
+	v -= c;
+	d++;
+      }
+      dest[pos] = d;
+      c /= 10;
+  }  
+  dest[5] = '\0';
+  return dest;
+}
+
+/* v = value, d = number of digits */
+const char *u8x8_u16toa(uint16_t v, uint8_t d)
+{
+  static char buf[6];
+  d = 5-d;
+  return u8x8_u16toap(buf, v) + d;
+}
+

lib/U8g2_ID942-tweaked/src/clib/u8x8_u8toa.c

@@ -0,0 +1,67 @@
+/*
+
+  u8x8_u8toa.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+
+#include "u8x8.h"
+
+static const unsigned char u8x8_u8toa_tab[3]  = { 100, 10, 1 } ;
+const char *u8x8_u8toap(char * dest, uint8_t v)
+{
+  uint8_t pos;
+  uint8_t d;
+  uint8_t c;
+  for( pos = 0; pos < 3; pos++ )
+  {
+      d = '0';
+      c = *(u8x8_u8toa_tab+pos);
+      while( v >= c )
+      {
+	v -= c;
+	d++;
+      }
+      dest[pos] = d;
+  }  
+  dest[3] = '\0';
+  return dest;
+}
+
+/* v = value, d = number of digits */
+const char *u8x8_u8toa(uint8_t v, uint8_t d)
+{
+  static char buf[4];
+  d = 3-d;
+  return u8x8_u8toap(buf, v) + d;
+}
+

lib/arduino-lmic-1.5.0-arduino-2-tweaked/examples/raw/raw.ino

@@ -1,162 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Matthijs Kooijman
- *
- * Permission is hereby granted, free of charge, to anyone
- * obtaining a copy of this document and accompanying files,
- * to do whatever they want with them without any restriction,
- * including, but not limited to, copying, modification and redistribution.
- * NO WARRANTY OF ANY KIND IS PROVIDED.
- *
- * This example transmits data on hardcoded channel and receives data
- * when not transmitting. Running this sketch on two nodes should allow
- * them to communicate.
- *******************************************************************************/
-
-#include <lmic.h>
-#include <hal/hal.h>
-#include <SPI.h>
-
-#if !defined(DISABLE_INVERT_IQ_ON_RX)
-#error This example requires DISABLE_INVERT_IQ_ON_RX to be set. Update \
-       config.h in the lmic library to set it.
-#endif
-
-// How often to send a packet. Note that this sketch bypasses the normal
-// LMIC duty cycle limiting, so when you change anything in this sketch
-// (payload length, frequency, spreading factor), be sure to check if
-// this interval should not also be increased.
-// See this spreadsheet for an easy airtime and duty cycle calculator:
-// https://docs.google.com/spreadsheets/d/1voGAtQAjC1qBmaVuP1ApNKs1ekgUjavHuVQIXyYSvNc 
-#define TX_INTERVAL 2000
-
-// Pin mapping
-const lmic_pinmap lmic_pins = {
-    .nss = 6,
-    .rxtx = LMIC_UNUSED_PIN,
-    .rst = 5,
-    .dio = {2, 3, 4},
-};
-
-
-// These callbacks are only used in over-the-air activation, so they are
-// left empty here (we cannot leave them out completely unless
-// DISABLE_JOIN is set in config.h, otherwise the linker will complain).
-void os_getArtEui (u1_t* buf) { }
-void os_getDevEui (u1_t* buf) { }
-void os_getDevKey (u1_t* buf) { }
-
-void onEvent (ev_t ev) {
-}
-
-osjob_t txjob;
-osjob_t timeoutjob;
-static void tx_func (osjob_t* job);
-
-// Transmit the given string and call the given function afterwards
-void tx(const char *str, osjobcb_t func) {
-  os_radio(RADIO_RST); // Stop RX first
-  delay(1); // Wait a bit, without this os_radio below asserts, apparently because the state hasn't changed yet
-  LMIC.dataLen = 0;
-  while (*str)
-    LMIC.frame[LMIC.dataLen++] = *str++;
-  LMIC.osjob.func = func;
-  os_radio(RADIO_TX);
-  Serial.println("TX");
-}
-
-// Enable rx mode and call func when a packet is received
-void rx(osjobcb_t func) {
-  LMIC.osjob.func = func;
-  LMIC.rxtime = os_getTime(); // RX _now_
-  // Enable "continuous" RX (e.g. without a timeout, still stops after
-  // receiving a packet)
-  os_radio(RADIO_RXON);
-  Serial.println("RX");
-}
-
-static void rxtimeout_func(osjob_t *job) {
-  digitalWrite(LED_BUILTIN, LOW); // off
-}
-
-static void rx_func (osjob_t* job) {
-  // Blink once to confirm reception and then keep the led on
-  digitalWrite(LED_BUILTIN, LOW); // off
-  delay(10);
-  digitalWrite(LED_BUILTIN, HIGH); // on
-
-  // Timeout RX (i.e. update led status) after 3 periods without RX
-  os_setTimedCallback(&timeoutjob, os_getTime() + ms2osticks(3*TX_INTERVAL), rxtimeout_func);
-
-  // Reschedule TX so that it should not collide with the other side's
-  // next TX
-  os_setTimedCallback(&txjob, os_getTime() + ms2osticks(TX_INTERVAL/2), tx_func);
-
-  Serial.print("Got ");
-  Serial.print(LMIC.dataLen);
-  Serial.println(" bytes");
-  Serial.write(LMIC.frame, LMIC.dataLen);
-  Serial.println();
-
-  // Restart RX
-  rx(rx_func);
-}
-
-static void txdone_func (osjob_t* job) {
-  rx(rx_func);
-}
-
-// log text to USART and toggle LED
-static void tx_func (osjob_t* job) {
-  // say hello
-  tx("Hello, world!", txdone_func);
-  // reschedule job every TX_INTERVAL (plus a bit of random to prevent
-  // systematic collisions), unless packets are received, then rx_func
-  // will reschedule at half this time.
-  os_setTimedCallback(job, os_getTime() + ms2osticks(TX_INTERVAL + random(500)), tx_func);
-}
-
-// application entry point
-void setup() {
-  Serial.begin(115200);
-  Serial.println("Starting");
-  #ifdef VCC_ENABLE
-  // For Pinoccio Scout boards
-  pinMode(VCC_ENABLE, OUTPUT);
-  digitalWrite(VCC_ENABLE, HIGH);
-  delay(1000);
-  #endif
-
-  pinMode(LED_BUILTIN, OUTPUT);
-
-  // initialize runtime env
-  os_init();
-
-  // Set up these settings once, and use them for both TX and RX
-
-#if defined(CFG_eu868)
-  // Use a frequency in the g3 which allows 10% duty cycling.
-  LMIC.freq = 869525000;
-#elif defined(CFG_us915)
-  LMIC.freq = 902300000;
-#endif
-
-  // Maximum TX power
-  LMIC.txpow = 27;
-  // Use a medium spread factor. This can be increased up to SF12 for
-  // better range, but then the interval should be (significantly)
-  // lowered to comply with duty cycle limits as well.
-  LMIC.datarate = DR_SF9;
-  // This sets CR 4/5, BW125 (except for DR_SF7B, which uses BW250)
-  LMIC.rps = updr2rps(LMIC.datarate);
-
-  Serial.println("Started");
-  Serial.flush();
-
-  // setup initial job
-  os_setCallback(&txjob, tx_func);
-}
-
-void loop() {
-  // execute scheduled jobs and events
-  os_runloop_once();
-}

lib/arduino-lmic-1.5.0-arduino-2-tweaked/examples/ttn-abp/ttn-abp.ino

@@ -1,226 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
- *
- * Permission is hereby granted, free of charge, to anyone
- * obtaining a copy of this document and accompanying files,
- * to do whatever they want with them without any restriction,
- * including, but not limited to, copying, modification and redistribution.
- * NO WARRANTY OF ANY KIND IS PROVIDED.
- *
- * This example sends a valid LoRaWAN packet with payload "Hello,
- * world!", using frequency and encryption settings matching those of
- * the The Things Network.
- *
- * This uses ABP (Activation-by-personalisation), where a DevAddr and
- * Session keys are preconfigured (unlike OTAA, where a DevEUI and
- * application key is configured, while the DevAddr and session keys are
- * assigned/generated in the over-the-air-activation procedure).
- *
- * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in
- * g1, 0.1% in g2), but not the TTN fair usage policy (which is probably
- * violated by this sketch when left running for longer)!
- *
- * To use this sketch, first register your application and device with
- * the things network, to set or generate a DevAddr, NwkSKey and
- * AppSKey. Each device should have their own unique values for these
- * fields.
- *
- * Do not forget to define the radio type correctly in config.h.
- *
- *******************************************************************************/
-
-#include <lmic.h>
-#include <hal/hal.h>
-#include <SPI.h>
-
-// LoRaWAN NwkSKey, network session key
-// This is the default Semtech key, which is used by the early prototype TTN
-// network.
-static const PROGMEM u1_t NWKSKEY[16] = { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C };
-
-// LoRaWAN AppSKey, application session key
-// This is the default Semtech key, which is used by the early prototype TTN
-// network.
-static const u1_t PROGMEM APPSKEY[16] = { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C };
-
-// LoRaWAN end-device address (DevAddr)
-static const u4_t DEVADDR = 0x03FF0001 ; // <-- Change this address for every node!
-
-// These callbacks are only used in over-the-air activation, so they are
-// left empty here (we cannot leave them out completely unless
-// DISABLE_JOIN is set in config.h, otherwise the linker will complain).
-void os_getArtEui (u1_t* buf) { }
-void os_getDevEui (u1_t* buf) { }
-void os_getDevKey (u1_t* buf) { }
-
-static uint8_t mydata[] = "Hello, world!";
-static osjob_t sendjob;
-
-// Schedule TX every this many seconds (might become longer due to duty
-// cycle limitations).
-const unsigned TX_INTERVAL = 60;
-
-// Pin mapping
-const lmic_pinmap lmic_pins = {
-    .nss = 6,
-    .rxtx = LMIC_UNUSED_PIN,
-    .rst = 5,
-    .dio = {2, 3, 4},
-};
-
-void onEvent (ev_t ev) {
-    Serial.print(os_getTime());
-    Serial.print(": ");
-    switch(ev) {
-        case EV_SCAN_TIMEOUT:
-            Serial.println(F("EV_SCAN_TIMEOUT"));
-            break;
-        case EV_BEACON_FOUND:
-            Serial.println(F("EV_BEACON_FOUND"));
-            break;
-        case EV_BEACON_MISSED:
-            Serial.println(F("EV_BEACON_MISSED"));
-            break;
-        case EV_BEACON_TRACKED:
-            Serial.println(F("EV_BEACON_TRACKED"));
-            break;
-        case EV_JOINING:
-            Serial.println(F("EV_JOINING"));
-            break;
-        case EV_JOINED:
-            Serial.println(F("EV_JOINED"));
-            break;
-        case EV_RFU1:
-            Serial.println(F("EV_RFU1"));
-            break;
-        case EV_JOIN_FAILED:
-            Serial.println(F("EV_JOIN_FAILED"));
-            break;
-        case EV_REJOIN_FAILED:
-            Serial.println(F("EV_REJOIN_FAILED"));
-            break;
-        case EV_TXCOMPLETE:
-            Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
-            if (LMIC.txrxFlags & TXRX_ACK)
-              Serial.println(F("Received ack"));
-            if (LMIC.dataLen) {
-              Serial.println(F("Received "));
-              Serial.println(LMIC.dataLen);
-              Serial.println(F(" bytes of payload"));
-            }
-            // Schedule next transmission
-            os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
-            break;
-        case EV_LOST_TSYNC:
-            Serial.println(F("EV_LOST_TSYNC"));
-            break;
-        case EV_RESET:
-            Serial.println(F("EV_RESET"));
-            break;
-        case EV_RXCOMPLETE:
-            // data received in ping slot
-            Serial.println(F("EV_RXCOMPLETE"));
-            break;
-        case EV_LINK_DEAD:
-            Serial.println(F("EV_LINK_DEAD"));
-            break;
-        case EV_LINK_ALIVE:
-            Serial.println(F("EV_LINK_ALIVE"));
-            break;
-         default:
-            Serial.println(F("Unknown event"));
-            break;
-    }
-}
-
-void do_send(osjob_t* j){
-    // Check if there is not a current TX/RX job running
-    if (LMIC.opmode & OP_TXRXPEND) {
-        Serial.println(F("OP_TXRXPEND, not sending"));
-    } else {
-        // Prepare upstream data transmission at the next possible time.
-        LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0);
-        Serial.println(F("Packet queued"));
-    }
-    // Next TX is scheduled after TX_COMPLETE event.
-}
-
-void setup() {
-    Serial.begin(115200);
-    Serial.println(F("Starting"));
-
-    #ifdef VCC_ENABLE
-    // For Pinoccio Scout boards
-    pinMode(VCC_ENABLE, OUTPUT);
-    digitalWrite(VCC_ENABLE, HIGH);
-    delay(1000);
-    #endif
-
-    // LMIC init
-    os_init();
-    // Reset the MAC state. Session and pending data transfers will be discarded.
-    LMIC_reset();
-
-    // Set static session parameters. Instead of dynamically establishing a session
-    // by joining the network, precomputed session parameters are be provided.
-    #ifdef PROGMEM
-    // On AVR, these values are stored in flash and only copied to RAM
-    // once. Copy them to a temporary buffer here, LMIC_setSession will
-    // copy them into a buffer of its own again.
-    uint8_t appskey[sizeof(APPSKEY)];
-    uint8_t nwkskey[sizeof(NWKSKEY)];
-    memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
-    memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
-    LMIC_setSession (0x1, DEVADDR, nwkskey, appskey);
-    #else
-    // If not running an AVR with PROGMEM, just use the arrays directly
-    LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY);
-    #endif
-
-    #if defined(CFG_eu868)
-    // Set up the channels used by the Things Network, which corresponds
-    // to the defaults of most gateways. Without this, only three base
-    // channels from the LoRaWAN specification are used, which certainly
-    // works, so it is good for debugging, but can overload those
-    // frequencies, so be sure to configure the full frequency range of
-    // your network here (unless your network autoconfigures them).
-    // Setting up channels should happen after LMIC_setSession, as that
-    // configures the minimal channel set.
-    // NA-US channels 0-71 are configured automatically
-    LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
-    LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI);      // g-band
-    LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
-    LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
-    LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
-    LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
-    LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
-    LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
-    LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK,  DR_FSK),  BAND_MILLI);      // g2-band
-    // TTN defines an additional channel at 869.525Mhz using SF9 for class B
-    // devices' ping slots. LMIC does not have an easy way to define set this
-    // frequency and support for class B is spotty and untested, so this
-    // frequency is not configured here.
-    #elif defined(CFG_us915)
-    // NA-US channels 0-71 are configured automatically
-    // but only one group of 8 should (a subband) should be active
-    // TTN recommends the second sub band, 1 in a zero based count.
-    // https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json
-    LMIC_selectSubBand(1);
-    #endif
-
-    // Disable link check validation
-    LMIC_setLinkCheckMode(0);
-
-    // TTN uses SF9 for its RX2 window.
-    LMIC.dn2Dr = DR_SF9;
-
-    // Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library)
-    LMIC_setDrTxpow(DR_SF7,14);
-
-    // Start job
-    do_send(&sendjob);
-}
-
-void loop() {
-    os_runloop_once();
-}

lib/arduino-lmic-1.5.0-arduino-2-tweaked/examples/ttn-otaa/ttn-otaa.ino

@@ -1,173 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
- *
- * Permission is hereby granted, free of charge, to anyone
- * obtaining a copy of this document and accompanying files,
- * to do whatever they want with them without any restriction,
- * including, but not limited to, copying, modification and redistribution.
- * NO WARRANTY OF ANY KIND IS PROVIDED.
- *
- * This example sends a valid LoRaWAN packet with payload "Hello,
- * world!", using frequency and encryption settings matching those of
- * the The Things Network.
- *
- * This uses OTAA (Over-the-air activation), where where a DevEUI and
- * application key is configured, which are used in an over-the-air
- * activation procedure where a DevAddr and session keys are
- * assigned/generated for use with all further communication.
- *
- * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in
- * g1, 0.1% in g2), but not the TTN fair usage policy (which is probably
- * violated by this sketch when left running for longer)!
-
- * To use this sketch, first register your application and device with
- * the things network, to set or generate an AppEUI, DevEUI and AppKey.
- * Multiple devices can use the same AppEUI, but each device has its own
- * DevEUI and AppKey.
- *
- * Do not forget to define the radio type correctly in config.h.
- *
- *******************************************************************************/
-
-#include <lmic.h>
-#include <hal/hal.h>
-#include <SPI.h>
-
-// This EUI must be in little-endian format, so least-significant-byte
-// first. When copying an EUI from ttnctl output, this means to reverse
-// the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3,
-// 0x70.
-static const u1_t PROGMEM APPEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
-
-// This should also be in little endian format, see above.
-static const u1_t PROGMEM DEVEUI[8]={ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
-
-// This key should be in big endian format (or, since it is not really a
-// number but a block of memory, endianness does not really apply). In
-// practice, a key taken from ttnctl can be copied as-is.
-// The key shown here is the semtech default key.
-static const u1_t PROGMEM APPKEY[16] = { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C };
-void os_getDevKey (u1_t* buf) {  memcpy_P(buf, APPKEY, 16);}
-
-static uint8_t mydata[] = "Hello, world!";
-static osjob_t sendjob;
-
-// Schedule TX every this many seconds (might become longer due to duty
-// cycle limitations).
-const unsigned TX_INTERVAL = 60;
-
-// Pin mapping
-const lmic_pinmap lmic_pins = {
-    .nss = 6,
-    .rxtx = LMIC_UNUSED_PIN,
-    .rst = 5,
-    .dio = {2, 3, 4},
-};
-
-void onEvent (ev_t ev) {
-    Serial.print(os_getTime());
-    Serial.print(": ");
-    switch(ev) {
-        case EV_SCAN_TIMEOUT:
-            Serial.println(F("EV_SCAN_TIMEOUT"));
-            break;
-        case EV_BEACON_FOUND:
-            Serial.println(F("EV_BEACON_FOUND"));
-            break;
-        case EV_BEACON_MISSED:
-            Serial.println(F("EV_BEACON_MISSED"));
-            break;
-        case EV_BEACON_TRACKED:
-            Serial.println(F("EV_BEACON_TRACKED"));
-            break;
-        case EV_JOINING:
-            Serial.println(F("EV_JOINING"));
-            break;
-        case EV_JOINED:
-            Serial.println(F("EV_JOINED"));
-
-            // Disable link check validation (automatically enabled
-            // during join, but not supported by TTN at this time).
-            LMIC_setLinkCheckMode(0);
-            break;
-        case EV_RFU1:
-            Serial.println(F("EV_RFU1"));
-            break;
-        case EV_JOIN_FAILED:
-            Serial.println(F("EV_JOIN_FAILED"));
-            break;
-        case EV_REJOIN_FAILED:
-            Serial.println(F("EV_REJOIN_FAILED"));
-            break;
-            break;
-        case EV_TXCOMPLETE:
-            Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
-            if (LMIC.txrxFlags & TXRX_ACK)
-              Serial.println(F("Received ack"));
-            if (LMIC.dataLen) {
-              Serial.println(F("Received "));
-              Serial.println(LMIC.dataLen);
-              Serial.println(F(" bytes of payload"));
-            }
-            // Schedule next transmission
-            os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
-            break;
-        case EV_LOST_TSYNC:
-            Serial.println(F("EV_LOST_TSYNC"));
-            break;
-        case EV_RESET:
-            Serial.println(F("EV_RESET"));
-            break;
-        case EV_RXCOMPLETE:
-            // data received in ping slot
-            Serial.println(F("EV_RXCOMPLETE"));
-            break;
-        case EV_LINK_DEAD:
-            Serial.println(F("EV_LINK_DEAD"));
-            break;
-        case EV_LINK_ALIVE:
-            Serial.println(F("EV_LINK_ALIVE"));
-            break;
-         default:
-            Serial.println(F("Unknown event"));
-            break;
-    }
-}
-
-void do_send(osjob_t* j){
-    // Check if there is not a current TX/RX job running
-    if (LMIC.opmode & OP_TXRXPEND) {
-        Serial.println(F("OP_TXRXPEND, not sending"));
-    } else {
-        // Prepare upstream data transmission at the next possible time.
-        LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0);
-        Serial.println(F("Packet queued"));
-    }
-    // Next TX is scheduled after TX_COMPLETE event.
-}
-
-void setup() {
-    Serial.begin(9600);
-    Serial.println(F("Starting"));
-
-    #ifdef VCC_ENABLE
-    // For Pinoccio Scout boards
-    pinMode(VCC_ENABLE, OUTPUT);
-    digitalWrite(VCC_ENABLE, HIGH);
-    delay(1000);
-    #endif
-
-    // LMIC init
-    os_init();
-    // Reset the MAC state. Session and pending data transfers will be discarded.
-    LMIC_reset();
-
-    // Start job (sending automatically starts OTAA too)
-    do_send(&sendjob);
-}
-
-void loop() {
-    os_runloop_once();
-}

platformio.ini

@@ -19,17 +19,22 @@ env_default = heltec
 ;env_default = lopy
 ;env_default = lopy4
 ;env_default = fipy
-;env_default = lolin32lite
-;env_default = lolin32
+;env_default = lolin32litelora
+;env_default = lolin32lora
 ;
 description = Paxcounter is a proof-of-concept ESP32 device for metering passenger flows in realtime. It counts how many mobile devices are around.
 
 [common_env_data]
 platform_espressif32 = espressif32@1.0.2
+;platform_espressif32 = espressif32@1.1.2
+;platform_espressif32 = https://github.com/platformio/platform-espressif32.git#feature/stage
 board_build.partitions = no_ota.csv
 lib_deps_all =
 lib_deps_display =
-    U8g2@>=2.22.14
+;   U8g2@>=2.23.12
+; U8g2 library stored local to tweak i2c display speed down to 100khz
+; speed, because 400khz causes interrupt injection error with espressif32 core v1.1.x
+; will be removed again after bug in espressif32 core v1.1.x is solved
 lib_deps_rgbled =
     SmartLeds@>=1.1.3
 lib_deps_gps =
@@ -39,153 +44,145 @@ build_flags =
 ; ---> NOTE: For production run set DEBUG_LEVEL level to NONE! <---
 ; otherwise device may crash in dense environments due to serial buffer overflow
 ;
-;    -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_NONE
-    -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_INFO
-;   -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_VERBOSE
-;   -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_DEBUG
+; -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_NONE
+; -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_INFO
+ -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_DEBUG
+; -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_VERBOSE
 ;
 ; override lora settings from LMiC library in lmic/config.h and use main.h instead
     -D_lmic_config_h_
     -include "src/paxcounter.conf"
+    -include "src/hal/${PIOENV}.h"
+    -w
  
 [env:heltec]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = heltec_wifi_lora_32
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 115200
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_display}
 build_flags = 
     ${common_env_data.build_flags}
-    -include "src/hal/heltec.h"
 
 [env:ttgov1]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = esp32dev
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 115200
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_display}
 build_flags = 
     ${common_env_data.build_flags}
-    -include "src/hal/ttgov1.h"
 
 [env:ttgov2]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = esp32dev
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 921600
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_display}
 build_flags = 
     ${common_env_data.build_flags}
-    -include "src/hal/ttgov2.h"
 
 [env:ttgov21]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = esp32dev
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 921600
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_display}
 build_flags = 
     ${common_env_data.build_flags}
-    -include "src/hal/ttgov21.h"
 
 [env:ttgobeam]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = esp32dev
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 921600
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_gps}
 build_flags = 
     ${common_env_data.build_flags}
-    -include "src/hal/ttgobeam.h"
 
 [env:fipy]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = esp32dev
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 921600
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_rgbled}
 build_flags = 
     ${common_env_data.build_flags}
-    -include "src/hal/fipy.h"
 
 [env:lopy]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = esp32dev
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 921600
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_rgbled}
     ${common_env_data.lib_deps_gps}
 build_flags = 
     ${common_env_data.build_flags}
-    -include "src/hal/lopy.h"
 
 [env:lopy4]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = esp32dev
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 921600
+monitor_speed = 115200
 lib_deps =
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_rgbled}
     ${common_env_data.lib_deps_gps}
 build_flags =
     ${common_env_data.build_flags}
-    -include "src/hal/lopy4.h"
 
-[env:lolin32lite]
+[env:lolin32litelora]
 platform = ${common_env_data.platform_espressif32}
 framework = arduino
 board = lolin32
 board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
-upload_speed = 256000
-lib_deps = 
-    ${common_env_data.lib_deps_all}
-    ${common_env_data.lib_deps_rgbled}
-build_flags =
-    ${common_env_data.build_flags}
-    -include "src/hal/lolin32lite_lora.h"
-
-[env:lolin32]
-platform = ${common_env_data.platform_espressif32}
-framework = arduino 
-board = lolin32
-board_build.partitions = ${common_env_data.board_build.partitions}
-monitor_speed = 115200
 upload_speed = 921600
+monitor_speed = 115200
+lib_deps = 
+    ${common_env_data.lib_deps_all}
+    ${common_env_data.lib_deps_rgbled}
+build_flags =
+    ${common_env_data.build_flags}
+
+[env:lolin32lora]
+platform = ${common_env_data.platform_espressif32}
+framework = arduino 
+board = lolin32
+board_build.partitions = ${common_env_data.board_build.partitions}
+upload_speed = 921600
+monitor_speed = 115200
 lib_deps = 
     ${common_env_data.lib_deps_all}
     ${common_env_data.lib_deps_rgbled}
 build_flags =
     ${common_env_data.build_flags}
-    -include "src/hal/lolin32_lora.h"

src/TTN/packed_converter.js

@@ -9,5 +9,12 @@ function Converter(decoded, port) {
         converted.pax = converted.ble + converted.wifi;
     }
 
+    /*
+    if (port === 2) {
+        converted.voltage /= 1000;
+        converted.uptime /= 60;
+    }
+    */
+
     return converted;
 }

src/antenna.h

@@ -0,0 +1,7 @@
+#ifndef antenna_H
+#define antenna_H
+
+void antenna_init(void);
+void antenna_select(const uint8_t _ant);
+
+#endif